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Thread: Runtime Error 401 Cannot show non-modal form when modal form is displayed(case 21069)

  1. #1
    Join Date
    Sep 2015
    Posts
    1

    Runtime Error 401 Cannot show non-modal form when modal form is displayed(case 21069)

    Hello,

    We are running an experiment where the participants are asked to write 3 short essays about themselves. The time they have to write the essay is limited to 3 minutes. My lab technicians have been reporting some participants (not all) are receiving an error message "Cannot show non-modal form when modal form is displayed". They report this only occurs between the second and third essays (between page2.exp and instructions3.exp) in condition 1.

    I have attached the experiment file.

    Any advice on how to correct this issue would be appreciated.

    SCC MAN TASK 1.exp
    Last edited by jason_reed; 11-14-2015 at 10:40 AM.

  2. #2
    Join Date
    Feb 2013
    Posts
    1,093
    Do you have any cases where two things are being timed at once? Or where something that is not timed but has a natural duration such as an audio or video clip is running while a duration parameter is being executed? Sometimes if the timing or ending of items collide in a conflicting way, this error can arise. Or at least *could* arise.
    Jason Reed
    Empirisoft Software Support Specialist

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