gvarab
commented
3 months ago Thank you for your report!
If I see it correctly, you have created a material set for each item individually (separate material sets called "Item1", "Item2", ..., each containing only one item in various conditions). L-Rex is designed in such a way that it expects these items to be together in one set. You can create a single set of materials called e.g. "Items" and add all the items to it; otherwise the distribution of the items will not work in the intended way. I am attaching a screenshot of a small L-Rex demo study for illustration:
More specifically, validating the items and creating the questionnaire does not work here because L-Rex expects the items in each set to be numbered starting with item number 1 (see Issue #214 which reports a similar problem).
See also the Guide to creating L-Rex experiments in the Wiki.
Hope that helps, please let us know if you have further questions or problems.
When I try to generate questionnaires, I get a server error.