How can I solve this problem?

This post (As well as an email that has just been sent) is to inform you that Lighthouse Studio versions 9.0 through to 9.8.1 will officially sunset on November 15th 2026 (six months from today).

These versions of the software are between 6 and 10 years old now, and in order to ensure our users have the most secure, high-performance experience possible, we are shifting our full support and resources to later versions of the platform. As a result, you will no longer be able to access our services using these versions of the software, after the sunset date.

We are aware that a small number of users still have live projects using these versions, and this post is specifically for those people.

What This Means for You

• Service Access: After 15th November, 2026, versions 9.0 - 9.8.1 will be decommissioned. You will be unable to log in or host surveys through these versions.
  

• Current Projects: While these versions of the software will no longer function, you will still be able to access your projects and data by opening your project in a more recent version of the software. However, we recommend completing your migration early to ensure compatibility with any custom code / styling you may have added.
  

• Technical Support: Technical troubleshooting for these versions will cease.
  

To maintain uninterrupted access to your projects, please upgrade to v9.17.2.

This newer version of Lighthouse Studio offers significantly enhanced security protocols and several new features, including:

• Increased Mobile Friendliness & Accessibility

• MaxDiff Simulator + Shapley Value Contribution Analysis

• Key Drivers Analysis (Utilizing Johnson's Relative Weights)

• Integrated Better Lighthouse Library

Thank you for your attention,

Dean

Within this post you will find a download link giving you access to the release of a new version of Lighthouse Studio, version 9.17.2, which you can download here.

The team have been working hard on this version, and as well as a host of security enhancements, stability improvements, and bug fixes, this version of the software also includes the ability to analyse MaxDiff data in a number of exciting ways.

·        MaxDiff Simulations – Simulate the likelihood of your items being chosen, using both First Choice and Share of Preference methodologies

·        TURF – Identify the optimal portfolio of the items within your MaxDiff, utilising First Choice, Weighted by Probability, Threshold, and the new Post-Thresholding methodologies

·        Shapley Contribution – Finally understand how much each individual item contributes to the overall reach of a portfolio using the same four methodologies you can utilise in TURF (without performing a Stepwise Iterative TURF analysis!)

There is also much more coming down the line shortly, from updates to our hosting system, a range of clustering algorithms, AI support chat, Perl syntax highlighting, plus many more exciting features and improvements.

Most sys_UserAgents look like this:

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.7433.163 Safari/537.36

Thank you for your responses.

most of them having the same screen width:

sys_Browser being mainly Chrome

With most operating Systems being Windows 10.0

I used the following after JS to prevent respondents from proceeding past questions B3a, B3b, B3c unless they select the right answers.

if(SSI_GetValue("B3A")!==2 ){

strErrorMessage = "Incorrect answer, please try again.";

}

However, I would like to create a flag that tells me how many answers were correct on the first submission. Any ideas on this?

Thank you!

I am designing a CBC in Lighthouse Studio 9.15.4. For the attribute brand, I have 8 levels, yet the first level is dependent on the respondent's region. I programmed it as [%ListLabel(CJAttBrand, QuotaRegion)%], whereby only the brand applicable for the region will be shown. The other 7 levels are nationwide and will be shown regardless of region.

My question is: is this the right way to go? And how should this be handled in analysis, given that the utilities are dependent on one another.
I was thinking to run three separate analyses.

Would this be the right way? Or is there something else I can do in the design in LS?