Version History

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New Features:

1. In the Admin Module you can now upload a list of respondent IDs in order to remove certain data records from your live data, as well as update survey data (question answers, quota assignments, respondent status, etc.) across multiple respondents simultaneously.

Fixes & Changes:

Fixes:

1. When running CBC Test Design, if interactions were included an error window would appear.
2. When attempting to export a client or analyst simulator package, and the exercise had Latent Class runs, an error appeared that a utility run was already included.
3. When deleting a list in the List Manager, when a prompt would appear that the list was in use by a question or another list, and the user selected No, the list would still be deleted.
4. When previewing a Semantic Differential question where no list had been specified, an error would be displayed.
5. When exporting jobs, if variables had certain naming patterns an error could occur.
6. Preview would fail on Free Format questions.
7. Pass-in fields would not save to the respondent data when using the Data Generator. This was introduced in Lighthouse Studio 9.2.
8. Fixed an issue with data generation for CVA.
9. Excluding None in a simulation using Logit utilities resulted in an error.
10. Previewing concept labels in CBC resulted in an error.

Fixes:

1. ACBC Test Design would fail if the study included passwords, quotas, or other ACBC exercises. 
2. Using ACBC Test Design then opening a new study remembered variable names from the first study. 
3. Importing CSV data in various locations caused a “cannot be auto mapped” error. 
4. Trying to save Shelf-Facing Display or Additional Formatting settings in CBC could cause a “null reference” error. 
5. MaxDiff scores were not zero-centered when exported even though the zero-centered scores within the Analysis Manager were correctly zero-centered. 
6. Some exercise outputs (i.e. utilities, importances, etc.) and sys_SequentialRespNum were not exported from Data Management. 
7. Constructed list MaxDiffs using pre-generated design containing more respondents than design versions would get an unknown error when running utilities and when exporting a CHO file. 
8. Trying to export analysis fields caused an error when additional respondents were accumulated after analysis was run. 
9. Trying to export MaxDiff fields for respondents that partially completed the MaxDiff exercise caused an error. 
10. Free Format preview caused a study verify error when using Sawtooth Script to reference a variable. 
11. Attribute coding interactions may not be saved in some situations. 
12. Filters would not be saved through Data Management. 
13. List item labels and internal labels would not be saved through the Grid Question settings. 

New Features:

1. Relevant Items (Constructed lists) in MaxDiff. It is now possible to ask respondents to select relevant (or other targeted) items and only those items will go into the MaxDiff exercise. Using constructed lists items can now vary across respondents. Learn more

Improvements:

1. The new MaxDiff designer includes a new criterion: across-set dispersion of items. This tries to ensure that a given item won’t appear in adjacent, or near-adjacent sets.
2. The new MaxDiff designer is slightly better at 1 and 2 way item balance in some circumstances.
3. The .CHO exports for MaxDiff studies can now include additional information needed for anchored MaxDiff estimation (both Louviere indirect and Lattery direct methods).
4. Prohibitions in Bandit and Express MaxDiff are now possible if you use the "On-the-fly" designer.
5. ACBC HB estimation within LHS v9.9 is significantly faster than before.

NOTE: With CBC Latent Class analysis and MaxDiff Latent Class analysis within LHS v9.9, there have been algorithm updates that cause the solutions to not be exactly the same as with v9.8. (Similar to the issue that if using a different seed, you’ll get a slightly different result).

Fixes:

1. Within the Analysis Manager an error would occur in the MaxDiff HB settings area if a decimal point was entered without a proceeding number (e.g. entering ".1" and not "0.1"). 
2. An error occurred in the Admin Module if running a survey in demo mode and self hosting with a SQL Server.
3. In the Analysis Manager an error would occur while exporting after canceling an HB run.
4. ACBC Calibration questions set to use dropdowns would appear incorrectly and raw HTML would appear on the screen.
5. The Dual-Response feature in MaxDiff would show the response options in a horizontal format. The response options are now displayed vertically.

Improvements:

1. Two JavaScript resources were updated to the latest versions. jQuery to 3.4.1 and Modernizr to 3.6.0.

Fixes:

1. In the Choice Simulator if level text of an attribute contained only numbers (with no additional text), and those numbers overlapped with the level index number, then the wrong level utility would be used in simulation calculations.
2. When exporting utilities from the data/export area, a MaxDiff score rescaler was inadvertently being used instead of the conjoint utility rescaler. Utilities exported from the Analysis Manager used the correct rescaling method.
3. Filters created within the Analysis Manager would not be available after leaving the Analysis Manager area.
4. If the Summed Price attribute was the first attribute in your attribute list, it was impossible to add Constraints to ACBC analysis.
5. The JavaScript function SSI_ShowAlert was not working.
6. There were various minor survey formatting issues (text alignment, white space).

New Features:

1. A new updated survey style has replaced our older survey styles. The main color of the style can be easily changed to any color you'd like. The older styles can still be found here and imported as custom styles.
2. We made it easy to include a survey logo.

Improvements:

1. In the simulator the performance of clicking on the segments or weights buttons has been improved when there are many demographic variables.

Fixes:

1. Pasting a bulleted or numbered list from Microsoft Word (or similar products) into a Lighthouse Studio list would use the list item contents as the internal label rather than the display text.
2. In some cases data was not recorded correctly, or the data was removed, with questions inside of nested loops (a loop inside of a loop).
3. Word Import would not import skips contained within grid questions.
4. Running Find and Replace or Translation would fail if the current questionnaire included a CBC or CVA exercise with no attributes.
5. Various minor fixes were made to Find and Replace and Translation. These include: adjusting what items are not included in translation, preventing items from appearing if they are disabled within the questionnaire, applying IntelliSense to some items during Find and Replace, and rearranging the order that items appear to be more inline with the Lighthouse Studio interface.
6. The following have been fixed in the Choice Simulator:
   1. Fixed the attribute level helper to show a scroll bar when there are a large number of levels.
   2. Fixed an extrapolation error when using Randomized First Choice with the SolveForShare function.
   3. Fixed simulation reports where demographic variables had a Total or Other category.
   4. Fixed an issue where a conditional price value may not be found if there are complicated alternative-specific rules.

Fixes:

1. For some users, uploading surveys via the Hosting Management dialog would result in an error.

Fixes:

1. Using Find and Replace would delete all of the skip logic in the survey.
2. If you were not a Windows administrator on your computer, the "Test" and "Preview" features would show an "access denied" error.
3. If the folder path to your study contained special characters the "Test" and "Preview" features would show a "cannot find part of path" error.
4. Some users would see a "500 Internal Server Error" message when trying to use the "Test" and "Preview" features.
5. If multiple quota questions had the same number of cells, and the cells were randomized, the same random order would occur across all those quota questions.
6. In the Analysis Manager if you had filters with invalid logic, even if not checked to be included, you might see an error message informing you that "The respondent filter removed all respondents."
7. Attribute pricing fields and missing level text within ACBC exercises would not appear when running Find and Replace or (where relevant) translation.
8. With alternative-specific designs, N/A levels in CBC fixed tasks would be reset upon opening the fixed task window or while attempting to generate a design.
9. Due to a bug in previous versions, additional conditional pricing tables, design prohibitions, and alternative-specific rules that have been added to the simulator beyond those contained in the exercise have been removed.
10. Study verification could incorrectly show an error for CBC exercises with certain partial profile settings.

New Features:

1. Updating text throughout your questionnaire is now much easier. To update text that appears in various places throughout your survey simply go to Compose, Find and Replace.
2. Quotas now include a "Least Fill" option. If respondents could qualify for multiple quota cells, "Least Fill" will assign the respondent the quota cell that is least filled. This allows you to fill quota cells more evenly.
3. Various updates have been made to the Choice Simulator including the following:
   1. Optimization searches will now understand alternative-specific attribute relationships and respect these relationships when performing searches. As part of this update, CBC designs now specify alternative-specific relationships through a separate tab, rather than by setting prohibitions.
   2. Respondents can now be assigned to more than one segment.
   3. Scenarios now have an auto-run option where the simulation could be set to update each time a level has been changed.
   4. New functions SolveForShare() and PercentRange() are now available in scenarios.
   5. Simulation results are now saved to the simulation project, and restored when loaded.

Improvements:

1. Large study texts are now split into multiple smaller texts when exporting for translation to improve efficiency.
2. If you are a user registered under multiple subscriptions you are now able to select which subscription you want to use.

Fixes:

1. Deleting multiple attributes involved in merged rows from the end of the attributes list could result in error messages.
2. SPSS exports would not properly export some special characters.
3. Preview/Test/Print Study/Paper and Pencil functionality would not work on network drives if special characters existed in the study file path.
4. Data being saved to a Free Format "hidden" variable must now match the specified variable data type. If an attempt is made to save the wrong type of data to the Free Format hidden variable, the data will not be saved and a warning will be sent to the Survey Log.
5. The "Prepare for Manual Upload" button was not available for those with an Academic Research subscription.
6. In some cases respondents were skipped out of a loop before they should have been.
7. The "Starting Respondent Number" setting in the Data Generator has been removed due to a potential problem it could cause.
8. The ACBC function ACBCWinnerLabel() did not work correctly with alternative specific attributes.
9. Using a custom access file (STUDYNAME_access.cgi) to customize access to the Admin Module could cause Auto Upload to fail.
10. CSS display issues existed in Paper and Pencil printed studies.
11. Choice tasks using merged rows, with a level that is missing because of a null prohibition, did not display correctly.
12. The Sawtooth Script PageTime() function did not always calculate the sum of page times correctly when a range of pages was given.
13. The CBC none concept did not display correctly on mobile devices when the orientation of the screen was changed.
14. Copy-and-pasted recodes and export jobs were not automatically renamed properly.
15. Disconnecting from a remote computer while using Lighthouse Studio on the remote computer could cause Lighthouse Studio to crash upon reconnecting.
16. A respondent that reached a terminate question before starting a Bandit MaxDiff exercise would need to be manually removed for analysis to work correctly.
17. An error message relating to export jobs with repeated names could appear incorrectly for jobs with similar names.
18. Attempting to create a question with a repeated name after running Word Import could result in an error.
19. Some Print Study settings relating to an ACBC exercise could load incorrectly.
20. The Choice Simulator could produce an error if a level's display text and internal label were blank.
21. The frequency with which each concept was selected was missing from the CBC/HB build report.
22. ASM functionality was not available if you had multiple licenses on your Sawtooth Account and one of them was an Academic Lab license.
23. Very first time running an ACBC/HB run could produce all zero utilities in the report.
24. There was a bug introduced in 9.5.3 that caused conditional price definitions used in the Choice Simulator to not save to the correct location and would result in the tables disappearing the next time the Choice Simulator was opened. Because two locations were incorrectly swapped, it became unfeasible to distinguish between a conditional price table that came over from authoring and a conditional price table that was newly defined within the Choice Simulator. Thus any conditional price tables defined in the Choice Simulator are deleted in this version and conditional price tables that came from authoring will have their "Values" column reset to the defaults.
25. ACBC Summed Price with Piecewise attribute coding incorrectly displays an error when the second price level is a negative number.
26. Exporting scores for a MaxDiff logit or MaxDiff latent class run could result in an error.
27. Conditional Price Tables created from inside the Choice Simulator would not save properly.
28. Under certain display resolutions and DPI settings, the incorrect cell could end up highlighted when clicking on a spreadsheet in the Analysis Manager or Choice Simulator.
29. The Getting Started wizard could wrongly appear when opening the Choice Simulator.
30. Running counts analysis on an ACBC with a summed price attribute and all attributes are skipped in the BYO could result in an error.

Fixes:

1. Some multiple monitor configurations would not remember a window's last position properly.
2. Trying to test or preview a study located on a network drive would result in the error message "unable to open database".
3. SPSS exports would fail if the study had certain unicode characters in the path.
4. Clicking Add or Edit Conditional Price Table in ACBC would result in an error.
5. Surveys created with the Academic Lab license within Lighthouse Studio were incorrectly limiting the surveys to 5 completes.
6. The questions and lists imported from a Word document could fail to save if the study was closed immediately after importing from Word.
7. In specific situations, constructed lists used in a grid question could appear with other specify fields in later questions.
8. In some situations respondents would see an error #251 if trying to restart a survey where the restart page was within a loop. This could happen if the loop used a constructed list with Sawtooth Script loop functions (e.g. LoopValue).
9. We have tightened the prior variance settings for the scale factor parameters in Otter's Method ("estimate separate scale factors" for the three major data sections in ACBC). In cases of sparse data, the scale factor parameter for the BYO section would become too extreme and not stable.
10. An error was introduced in LHS 9.0.0 causing uncalibrated ACA OLS utilities to be saved as final raw utilities rather than being calibrated. This issue did not affect zero centered diffs ACA OLS utilities.
11. An error would appear when importing a looped variable that no longer existed in the questionnaire.
12. If, while adding a question to your Question Library, you clicked "Add Folder" to add a folder in your Question Library, an error would occur.

New Features:

1. Now you can import your Word document directly into Lighthouse Studio and it will generate all your questions, skip logic, comments, etc.
2. Bandit MaxDiff is now available. It uses preferences from previous respondents so subsequent respondents see MaxDiff questions that oversample the top items - the ones that are most likely to turn out to be the overall winners.
3. Genetic Search Algorithms are now in the Choice Simulator.

Improvements:

1. The MaxDiff 500 license has been upgraded to MaxDiff 2000
2. We have dramatically increased the speed of our Logit and Latent Class routines for MaxDiff. Depending on the data, estimation settings, and the number of processor cores on your machine, you may see speed improvements of up to 40x.
3. Improved the loading time of the export area when the study contained many respondents and analysis runs.
4. The SPSS export better supports Unicode characters now.
5. Files exported to Excel now have improved default column widths.
6. Default variable names have been improved in the merging data area.
7. The Sawtooth Script SetValue() now works with quota questions.
8. A new function named ParentListName() has been added to Sawtooth Script.
9. If a respondent qualifies for a quota cell, leaves the survey, and then returns after the cell has filled, they are sent to the disqualify terminate screen. The quota cell value is now assigned the value -3. It used to be assigned the quota cell value the respondent originally qualified for.
10. The respondent IP address is no longer saved by default.
11. The Sawtooth Script functions CBCAttributeValue() and CBCLevelValue() were altered to return 0 when the requested level or attribute is replaced by merged rows.
12. Find and replace text was not being saved inside text editors.
13. ACBC summed pricing is no longer allowed when the base price and all component prices are zero or empty.
14. You can now remove attributes with summed pricing from the ACBC BYO.

Fixes:

1. On some computers, the error "Unable to get information about junction point" would prevent preview from working.
2. The SPSS export with "Strip HTML" checked would replace all script sections with the first script section's contents.
3. The logic verification in Filters | Custom Logic now works properly.
4. If a page with a lot of input was submitted to the data generator, it would crash.
5. In preview mode, if you switched from desktop to mobile on the 2nd page of the survey, the page would not be displayed properly.
6. MaxDiff Sawtooth Script functions such as MaxDiffRankAttValue() did not return the correct results if used immediately after the first MaxDiff question.
7. Removing respondent data records via the Admin Module's View/Edit screen now also removes the history data for the respondents. This fixes a possible issue where new respondents might see data from records that were previously deleted. This would only occur in rare cases (if the database was reset).
8. The Handle Start Position in Semantic Diff questions would not align properly in some instances.
9. Surveys with a large number of passwords could cause survey setup problems in Test Mode in the Admin Module.
10. In some situations, Semantic Diff answers were not restored when backing up using the browser back button.
11. The setting to hide the totals box in constant sum CBC did not work.
12. The width and height parameters in the Sawtooth Script ToolTip() function did not work correctly.
13. The "Total" counter for CBC Constant Sum did not include the "none" level when using the Sawtooth Script CBCNone().
14. Under some circumstances, the Sawtooth Script function for PageTime() would not work correctly when given a range of pages.
15. In some cases, when a respondent would backup in the survey, the page time data for the previous page and for the summed page time would be erroneously reset to 0.
16. In CBC, if all the attributes were being merged together, and all the attributes had their text replaced through conditional display, then the merge would fail and the attributes would display individually.
17. In some cases, backing up in a survey would reset the previously selected worst concept in best/worst CBC.
18. In some cases, using HTML tags inside of ACBC Must Have and Unacceptable questions caused formatting issues.
19. A change in Google Chrome caused drag and drop Ranking and Semantic Differential questions to not repopulate their answers when backing up in the survey.
20. Grid questions with dropdown lists, where the dropdown list has "Other Specify" data piped into it from a prior question, would not display correctly.
21. Constant Sum CBC on Safari with iOS had some display issues when viewed on a mobile device.
22. Fixes the Zero-centered Diffs algorithm so that a shift in attribute utilities also shifts the none utility.
23. ACBC Test Design would not display if a respondent reached a prohibited concept.
24. CBC Counts reported incorrect number of tasks for studies with multiple CBC exercises.
25. The data generator could fail for Grid questions with other specify fields.

The following bug fixes have been made in Lighthouse Studio in general:

1. Grid questions would sometimes not rename properly and result in an error.
2. An error would occur in Print Study (PDF or HTML) if the survey contained the SetValue Sawtooth Script.
3. The Admin Module search feature would produce an error when searching based on the Respondent Number.

The following bug fixes have been made in CBC:

1. CBC exercises with Alternative-Specific designs and "Align Common Attributes on Same Row" unchecked may not have displayed all of the level text contained in the design. This was introduced in Lighthouse Studio 9.5.0.
2. In some cases CBC prohibitions involving more than two attributes would not be saved correctly.
3. Increasing the number of CBC random or fixed tasks after initially creating the exercise would insert the tasks in the wrong order.

The following bug fixes have been made in ACBC:

1. In some cases the ACBC None Threshold Calibration would show an error if the source run had excluded attributes from analysis.
2. Exporting ACBC utilities from the export area would show an error.

The following bug fixes have been made in MaxDiff:

1. On-the-fly MaxDiff functions (MaxDiffRankAttLabel, MaxDiffScore, etc.) could produce incorrect results when using MaxDiff in Free Format and allowing respondents to skip questions.

The following bug fixes have been made in Lighthouse Studio in general:

1. In some cases respondent data used later in a survey (Sawtooth Script, skip logic, constructed lists, etc.) would be returned as a blank. This could occur if the question being referenced had more than 100 data fields (for example, a 10x11 numeric grid, or a select question with 101+ checkboxes).
2. In some cases respondent data used inside of a loop was not available. For example, if a survey loops over Q1-Q5, and Q1 is referenced in Q3-Q5, the returned value would be blank instead of the answer to Q1.
3. The Sawtooth Script function PageTime displayed an error if any page (in the range of specified pages) was included in a loop. An error could also occur if one of the pages in the range returned 0 for the time on that page.  This could occur for example if one of the pages were skipped.
4. A conversion prompt message was not always shown when opening a study created in a previous version of the software.
5. Renaming a numeric question using the "Rename" button did not work.

The following bug fixes have been made in CBC:

1. Using HTML tags in the CBC dual response none text would cause formatting errors.
2. In some cases, running CBC HB with "Save draws" checked would result in obviously incorrect results and sometimes even produce a software error message when writing out the report. This was introduced in version 9.1.0.

The following bug fixes have been made in the Choice Simulator:

1. Exporting a client simulator package would freeze Lighthouse Studio.
2. Excel simulators using Randomized First Choice and a custom exponent would not update the simulation when the exponent was changed.

The following bug fixes have been made in Lighthouse Studio:

1. Users with academic and commercial licenses would be put into demo mode.

The following bug fixes have been made in the Choice Simulator:

1. Fixed an issue in version 9.5.0 which incorrectly flagged level values less than zero as invalid.

The following features have been added to Lighthouse Studio:

1. The choice simulator now includes the ability to perform grid and exhaustive searches for Advanced Simulation Module license holders.
2. A new "ssi_ready" event has been added to the JavaScript library. Using the "ssi_ready" event will allow you to call your custom JavaScript after the page has been fully loaded. See the documentation for more information.
3. A "popup_link" class has been added to the HTML to allow for custom styling of links produced by the PopUp Sawtooth Script function.

The following bug fixes have been made in Lighthouse Studio in general:

1. Occasionally Lighthouse Studio would display a message asking you to sign back into your account and then crash.
2. Exporting merged variables would incorrectly show a warning that certain fields could not be found.
3. The JavaScript function SSI_GetValue would always return 1 for single select questions (radio buttons) with only 1 option. This would occur whether or not the response option was selected.
4. An error would occur when updating a survey using a newer version of Lighthouse Studio if the Admin Module "Test Mode" had been used.
5. The Sawtooth Script Rounding function has been updated. Prior versions used a default "Banker's Rounding" approach where even numbers rounded down and odd numbers rounded up. The Round function now rounds numbers up if the determining value is 5 or more.
6. Long list items in select questions could cause the "Number of Columns" setting to be ignored.
7. Print study (Graphical View) would fail if the survey contained Terminate questions with "Link to a Questionnaire or Website" selected.
8. In some cases the exclusive option ("None of the above") in grid questions would not deselect other options. This could occur when the grid question was using a constructed list and displayed in the mobile format.

The following bug fixes have been made in CBC:

1. Between-concept prohibitions would sometimes be improperly collapsed into within-concept prohibitions after closing the prohibitions window.
2. Free format CBC questions with shelf facing displays could cause an error.
3. ToolTips used inside of CBC concepts did not display correctly.
4. Sawtooth Script CBC functions used inside of a CBC header or footer would cause the survey to crash.
5. In some cases Sawtooth Script CBC functions would fail to display an attribute when Alternative Specific CBC designs were used.
6. The attribute label "Location" setting was not saved to the .ssi file. This would result in the setting being reset to "Left of concepts" after closing the study and opening it back up.

The following bug fixes have been made in MaxDiff:

1. The exported MaxDiff CSV file was missing a column needed to properly upload all the scores to MaxDiffAnalyzer. This occurred in the export area. The MaxDiff CSV file exported from the Analysis Manager worked correctly.

The following bug fixes have been made in ACBC:

1. HB estimation would ignore the setting for how to treat missing levels and always use the "Missing at Random" setting. CHO file exports also experienced the same problem. This bug was introduced in version 9.0.

The following bug fixes have been made in the Choice Simulator:

1. The Choice Simulator would not always show prohibitions from the design settings of an exercise the first time this area was opened.

The following features have been added to Lighthouse Studio:

1. We have completely redesigned how CBC exercises are displayed on small screens. The new design allows mobile users to scroll through CBC questions viewing each concept one at a time. You can control whether respondents view each concept horizontally or vertically.
2. CBC in general was given a major visual update. Behind the scenes we are no longer using HTML tables. Concepts are now selected by clicking a button. When that happens a green checkbox appears and the whole concept is highlighted.
3. In CBC you can now merge multiple attributes into a single row. This can be useful in cases when a level from an attribute doesn't apply to a product concept and is shown as a "blank." There are some instances in which too many blanks in the choice task can lead to poor readability of the product concepts. Merged Rows solves this problem.
4. The Data Reports area of the Admin Module now has a "Select All" checkbox.
5. It is now easier to customize CBC questions in Free Format by using the Sawtooth Software Question Library. See the updated documentation.
6. The "error log" functionality in the Admin Module has been updated. There are now errors, warnings, and notices. If a new error or warning occurs you will be notified by a message at the top of the Admin Module. A new "WriteLog" Sawtooth Script function has been added (Note: This could be very helpful for debugging Unverified Perl).
7. Small improvements have been made to the HTML to help with screen readers.
8. The Device Id for the Offline Surveys app is now displayed when viewing data records in the Admin Module.
9. The JavaScript libraries for jQuery and jQuery UI have been updated.

The following bug fixes have been made in Lighthouse Studio in general:

1. We have dropped support for Internet Explorer 10 and earlier. We have also dropped support for all browsers that do not support Flexbox. Respondents with older browsers will now see the "Unsupported Browser" error message.
2. In the Offline Surveys app we have dropped support for Android 4.3 and earlier.
3. JavaScript is now required for respondents to take surveys. The advanced option to allow respondents into the survey without JavaScript has been removed.
4. Test mode has been updated to not use an iFrame in desktop mode. Mobile testing still uses an iFrame.
5. Questions inside of a nested loop would not load if the first iteration of the nested loop was skipped due to an empty constructed list.
6. An error would occur while testing the survey locally if a prior iteration of the survey had passwords and then they were removed.
7. In some cases exclusive check boxes did not work in grid questions when displayed on mobile devices.
8. Variable names now show in drag-and-drop ranking questions when specified in test mode and print study.
9. Sawtooth Script will now evaluate in print study when possible rather than always inserting the "[script]" place holder.
10. The page width setting would ignore widths greater than 900 pixels.
11. A few class names that were missing from the HTML in the ACBC BYO question have been added.

The following bug fixes have been made in Lighthouse Studio in general:

1. An error would occur during authoring as a result of copying and pasting Free Format questions.
2. In the Question Library an error would occur when entering a block or folder name if an existing item had the same name but different case (e.g. "Block1" vs "block1").
3. Running the data generator with loops in a study would result in an error message.

The following bug fixes have been made in ACBC:

1. In ACBC studies BYO tasks would not be included in utility estimation or *.cho exports. This was introduced in v9.1.0.

The following features have been added to Lighthouse Studio:

1. Lighthouse Studio now provides a way to save questions to a library so you can reuse them in future surveys. A "Sawtooth Software Library" has also been included with over 30 pre-built questions that you can use in your surveys.
2. Utilities and importance scores are now selectable as export items alongside general survey data.
3. Latent Class group assignments are now automatically available as segmentation variables in the choice simulator, similar to other survey questions.
4. You can now enter price (to the buyer) and cost (to the producer) data per attribute level for the purpose of reporting revenue and profits in the choice simulator (also known as the market simulator).
5. Previous versions of our CBC software have featured two methodologies for testing the design and estimating a priori standard errors for attribute levels. We’ve simplified the interface to use the better of the two by default: the Advanced Test which estimates standard errors using logit analysis for test robotic respondents according to the user-defined expected sample size. The other approach, which was less useful for advanced designs (alternative-specific and partial-profile), has been deprecated to an option on the Test Design menu and is still available for historical purposes.

The following bug fixes have been made in Lighthouse Studio in general:

1. The data generator would fail and display an error with certain options selected.
2. Exporting data to SPSS and stripping HTML from the text would truncate labels at the first '[' character.
3. The graphical view output of Print Study was not displaying question or variable names when those options were checked.
4. When trying to automatically open the file after printing a study to HTML, the software tried to open a file that didn't exist and an error would occur.
5. Chinese characters were not registering as input for other specify response options when using the Simplified Chinese version of Windows and a Chinese character language pack.
6. The mobile view of grid questions now properly displays cell input labels.

The following bug fixes have been made in ACBC:

1. An error would occur during ACBC HB analysis if the BYO was skipped, constructed lists were in use, and piecewise coding was chosen for the price attribute.

The following features have been added to Lighthouse Studio:

1. Lighthouse Studio is now able to take advantage of 64-bit processors, and as a result many operations are significantly faster. Our tests show 20-25% improvements in uploading surveys, creating CBC designs, running HB analysis, and simulations. Exporting also shows a modest speed increase.
2. The "Export/Import text for translation" feature now supports Excel and CSV file formats.
3. Wide images now display better on small screens. If the screen is smaller than the width of the image the image width changes to match the size of the screen.
4. The icons on the main screen now have labels. The print icon has been removed. You can still access print via the File menu.

The following bug fixes have been made in Lighthouse Studio in general:

1. Lighthouse Studio relies on Internet Explorer to display question and page preview. If the version of Internet Explorer on your computer is earlier than version 11, the preview experience could be degraded. We recommend that you update to Internet Explorer 11 to have the best experience possible. You will see a warning in the installation process if you do not have Internet Explorer 11 installed.
2. The auto upload process would fail if the Admin Module password contained any special characters.
3. The local Test Survey should now work with special characters in the study path.
4. In the Export Data area the total number of export fields would sometimes report the wrong number of available fields.
5. In "Lighthouse Studio Settings" found under the File menu, some settings such as "If port is unavailable, randomly choose another port" would not save properly.
6. In some situations, under slow internet connections, users would automatically be signed out of the software.
7. When checking for errors and warnings in the questionnaire the software now reports the errors at the top of the list followed by the warnings.
8. When exporting SPSS files, if "Include text" for Header 1, Header 2, Question, or Additional Question-Specific was selected the resulting export would not include the text specified.
9. Local Test/Preview would work only once and then fail if the study was opened using a mapped network drive in the study path.
10. Exporting SPSS files with a lot of fields would get increasingly slower as the export progressed. This has been optimized.
11. Open-end text boxes would display a bit too wide on small screens.
12. Caching has been turned off in test and preview modes. External resources such as graphics, CSS files, or JavaScript files can now be updated without the old versions getting stuck in the browser cache.
13. A change was made with ToolTips in 9.1.0 that introduced a display bug when ToolTips were used with certain survey styles. These styles were: Archivo, Flex_blue, Flex_green, Lato, and Lora. The styles have been updated to address this issue.
14. In some situations the Grid response option text color was not the same in the desktop and mobile views.
15. In some cases, grid questions with repeated row and column labels would have repeated response options in the mobile layout.

The following bug fixes have been made in the Choice Simulator:

1. Opening the Choice Simulator would sometimes result in a software error after renaming or deleting an analysis run.

The following bug fixes have been made in ACA:

1. When exporting ACA Pairs, Importances, or Calibration questions as part of a Raw Data export, we now include the full data for that answer (including design information) instead of just the answer that was chosen.

The following bug fixes have been made in ACBC:

1. In some cases, running ACBC HB with "Save draws" checked would result in obviously incorrect results and sometimes even produce a software error message when writing out the report.

The following features have been added to Lighthouse Studio:

1. Lighthouse Studio will now detect the size of the respondent's browser window and will change the layout of a grid question to be more usable on small screens (mobile devices etc.). On small screens, each row (or column) of the grid question becomes a separate sub question on the same page. This feature may be turned off if you prefer the standard layout on small screens.
2. Responses to Select questions are now easier to choose on mobile devices.
3. ScreenWidth() has been added to the scripting library and will return the respondent's browser width in pixels. This can be used in skip logic, quota control, etc.
4. Test and preview mode have been updated to simulate viewing a survey on a small screen. You can additionally change screen dimensions and switch between portrait and landscape mode.
5. Downloading data from the Admin Module has been improved. Larger surveys should experience faster data download times.
6. Ranking questions now have better labels in the Admin Module reports.
7. Auto Upload is now much faster and solves various upload issues.
8. Validating respondent passwords (survey login) is now much faster.
9. Testing a survey locally no longer uses the Apache web server.
10. Conjoint utilities and MaxDiff scores are now available to export along with other survey data. Each analysis run can be selected for export under the "Fields..." area in export settings.
11. PowerPoint reports of simulations are now available.
12. The maximum number of products that can be created in an Excel simulator is now 25 (previously 15).
13. In the Choice Simulator a change was made in the way Randomized First Choice operates when applying product availability adjustments via multi-store shopping. Previously, we were first computing share adjustments to account for product availability in stores according to the share of preference (logit) rule, followed by a secondary adjustment for product similarity according to Randomized First Choice. Now, the entire process is more true to Randomized First Choice in that it is used (rather than logit) throughout the entire multi-store simulation procedure. The results are usually not very different, but now with a little bit stronger correction for product similarity.
14. "On the fly" MaxDiff estimations can now be reproduced using a logit run in the Analysis Manager.
15. Two new Sawtooth Script functions have been added for MaxDiff. MaxDiffRLH() returns the respondent's root likelihood and MaxDiffRSQ() returns the pseudo r-squared, or percent certainty. These may be helpful if you want to conduct special logic (such as a skip pattern) or to display a particular message on the screen based on the respondent's consistency in answering MaxDiff questions.
16. Custom CBC, MaxDiff, and CVA exercises now save the design ID and version number when first referenced in any question.

The following bug fixes have been made in Lighthouse Studio in general:

1. Auto Upload will now automatically update the survey link in the Data Management area.
2. Extremely large surveys could time out when downloading data from the Admin Module.
3. The Study Summary page in the Admin Module would load very slow if the survey had a large amount of quotas.
4. Labels with double quotes in them would cause the charts in the Admin Module to not display correctly.
5. Respondents using the Microsoft Edge browser were recorded as using the Chrome browser.
6. The JavaScript function SSI_GetValue now returns decimal responses with a period. Previously it would return the decimal as a comma if it was entered by the respondent.
7. The JavaScript function SSI_GetValue has been improved to properly return numbers and strings when appropriate.
8. The JavaScript jQuery library has been updated from 1.11.3 to 1.12.3.
9. Tooltips now reposition themselves above the mouse pointer when they are at the very bottom of a page with multiple questions.
10. The advanced setting "Max Database Tables to Join" has been removed from the software.

The following bug fixes have been made in the Choice Simulator:

1. Simulations using both the First Choice simulation method and adjustments for product availability (multi-store) would calculate incorrect product shares.

The following bug fixes have been made in ACA:

1. ACA Level Ranking setting for an attribute could not be changed. This was introduced in version 9.0.0.

The following bug fixes have been made in ACBC:

1. ACBC/HB restart functionality was not working. The estimation would always began at iteration one.
2. Extremely small d-efficiencies in a respondent's ACBC exercise could be written in scientific notation and cause an error when accumulating data.
3. ACBC BYO summed pricing would not update in preview mode.

The following bug fixes have been made in CBC:

1. CBC/HB restart functionality was not working. The estimation would always began at iteration one.
2. CBC constant sum total would not update in preview mode.

The following bug fixes have been made in Lighthouse Studio in general:

1. Data downloaded from a server was in an incorrect format. After 30 data records the start time and end time were not included, the data was shifted two columns to the left, and an error would occur when accumulating.
2. Updating the study on the server from 8.4 would not work if the constructed lists database table contained duplicate entries. Duplicate entries will be resolved if possible, otherwise a diagnostic error will be written to the study server error log.
3. Preview would not work if you had opened the study using a mapped network drive.
4. The ToolTip function has been updated to not spill off the left side of the screen on small mobile devices.

The following features have been added to Lighthouse Studio:

1. The Choice Simulator is now integrated into Lighthouse Studio. New features include visualization of shares and utilities, and improved options for adjusting shares based on product availability and awareness.
2. When estimating utilities for CBC, MaxDiff, ACBC, CVA, or ACA, you now have the ability to manage multiple runs rather than always overwriting the base run. This makes it easier to investigate different modeling options without overwriting your previous work.
3. Within the ranking question there is now a Drag and Drop option. This interactive question type allows respondents to rank items by rearranging them on the screen. We have included various options to allow you to customize the look and behavior.
4. The prior method of doing CAPI surveys (offline interviewing) has been removed. The new version of CAPI supports both Windows and Android devices and has an improved method for distributing surveys and collecting data. The updated version of CAPI will be released soon and will be compatible with Lighthouse Studio v9.
5. Lighthouse Studio now detects your time zone (during survey creation) and records all data records with this time zone. You can change the time zone under Survey Settings.
6. JavaScript now runs when previewing a question so you can view interactions such as drag and drop, constant sum, checking checkboxes, etc.
7. The appearance of the Admin Module has been improved and is more mobile friendly.
8. The database tables have been updated to be more efficient. MySQL databases have been updated to be more efficient (from MyISAM to InnoDB).
9. Surveys are now backwards compatible on the server. This means you can upload a v9 survey to an existing v8.4.8 survey and it will automatically update.
10. The respondent start time and end time are now displayed in a date format in the CSV file downloaded from the Admin Module.
11. Scalable Vector Graphics (.svg) are now supported when browsing to images and previewing questions.
12. A few new survey styles have been included. Some of the older styles have been removed.

Please note the following:

1. SSI Web has been renamed to Lighthouse Studio.
2. Lighthouse Studio now requires that each user have a Sawtooth Software Account. The first time you use Lighthouse Studio you will be prompted to sign in. After that you will be prompted to sign in every 60 days. License administrators can manage users and licenses via https://account.sawtoothsoftware.com.
3. Windows 7 Service Pack 1 or higher is required to run Lighthouse Studio.
4. The required version of Perl installed on the web server has changed to Perl 5.14.2 or newer. This will only affect customers who are hosting on their own.
5. Version 9 does not bring forward the analysis settings from any previous versions. Previous runs may be brought directly into our standalone Choice Simulator through an HBU file import.
6. Version 9 does not bring forward the path information found in the menu item "File | SSI Web Settings" from previous versions. This includes the Default Studies Folder, User Styles Library Folder, Graphics Library Folder, and Local Test Server Folder. If you customized these locations, you may re-enter the information under "File | Lighthouse Studio Settings."
7. The method for customizing the Admin Module has changed. To customize the Admin Module add a CSS file named "custom_admin_style.css" to the graphics folder.
8. The default Prior Variance setting for HB estimation within CBC has been changed from 2.0 to 1.0 based on information we've learned about overfitting.
9. The JavaScript library jQuery has been updated to version 1.11.3.
10. The JavaScript library jQueryUI has been updated to version 1.11.4.
11. The default HTML Doc type for surveys is now HTML5.
12. We have removed the HTML tables for select, numeric, open-end, and ranking questions.
13. SSI Script has been renamed to Sawtooth Script.
14. CiW has been renamed to General Interviewing.

The following bug fixes have been made in Lighthouse Studio in general:

1. Various minor user interface issues have been fixed.
2. Some non-English characters collected in open-end questions would not be formatted correctly in the CSV file downloaded directly from the Admin Module.
3. When using SSI Script (Sawtooth Script), some decimal numbers would display incorrectly. For example instead of displaying 55.2 it would display 55.200000000000003.
4. The incompletes report in the Admin Module was not counting respondents who stopped on a page that started with a quota question.
5. Tooltips have been enhanced to more accurately resize to fit the content and no longer display off the screen.
6. The Tooltip function in Sawtooth Script has been updated so that the width and height are optional.
7. Sometimes data within nested loops would not save properly when the inner loops didn't share an anchor page with the outer loops.
8. Local Web now supports more character options in passwords.
9. The Data Generator now gives a more user-friendly message when all the study passwords have been used.
10. Non-mapped network paths are now supported.
11. In some rare situations involving constructed lists and backing up in the survey, the other specify text was displayed on the screen improperly.
12. Quota values would be deleted in certain conditions during limbo cleaning.
13. In the reports area of the Admin Module some decimal values were being rounded to whole numbers.
14. The Data Generator would give a cryptic error message when the Remote URL was left blank.
15. Auto upload now correctly handles UTF-8 characters in paths.
16. SPSS Exports didn't strip HTML from list values for checkbox questions when "Item numbers per column" was checked.

The following bug fixes have been made in ACBC:

1. ACBC alternative-specific designs would not always work in Test Design if the primary attributes were not before the conditional attributes.
2. The D-Efficiency value generated by ACBC wouldn't accumulate if saved in scientific notation.

The following bug fixes have been made in CBC:

1. Exporting to a CBC Single CSV or Dual CSV with only fixed tasks would fail and display an error message.