Hi,

I just registered a web script and am having different people try it out on their computers. It works fine on mine, but crashes when other people try it.

I used web control version 4.0.2.0.

The crash happens just after the first block, which contains a surveypage I use as a consent form. 

This is the page & the block:  

<surveypage consent>
/ questions = [1=consent]
/showpagenumbers = false
/ showquestionnumbers = false
</surveypage>

<block consent>
/ trials = [1=consent]
/ preinstructions = (consent)
/ postinstructions = (consentok)
/ quit = [radiobuttons.consent.response=="0"]
</block>

The second block is variable based on the subjectnumber.

<variables>
/ group = (1 of 2)(block2=UUT; ...
/ group = (2 of 2)(block2=RAT; ...

Here are the two blocks. Nothing remarkable about them ...

<block RAT>
/ trials = [1-30 = noreplace (RATdifficultpage, RATeasypage)]
/ preinstructions = (RATintro1, RATintro2, RATintro3, RATintro4, RATintro5, RATintro6)
/ postinstructions = (RATend)
</block>

<block UUT>
/ trials = [1-4 = noreplace(UUTpage)]
/ preinstructions = (UUTintro1, UUTintro2)
/ postinstructions = (UUTend)
</block>

Both blocks don't use any files, so that doesn't seem the to be the problem.

We tried running the experiment with Firefox and Chrome with updated Java, both times it crashed.

Any ideas what could be the problem?

Thanks in advance,

Claire

This may well be an issue exclusive to Java / the JavaWebStart launch method. I suggest you temporarily disable this method via your launch page settings and try using the Firefox / NPAPI plugin instead.

Thanks for the quick reply, Dave.

I don't see Firefox / NPAPI as an available option, but is MozillaPlugin equivalent?  And should I enable or disable the other options, ActiveX and ClickOnce?

Yes, that's what I meant. Sorry for the confusion.

No, those should work fine, but let us know if you see otherwise. They'll effectively be available to Internet Explorer users anyway.

Hi Dave,

I tried it out, but it still crashes.

Can you share the link to your launch page then?

Yes, this is it: http://research.millisecond.com/clairezedelius/Fullstudy.web

Hmm, it's working perfectly fine for me (I did a quick test run using the latest Firefox / Mozilla plugin). Can you try removing any prior plugin installations as per http://www.millisecond.com/support/uninstall.aspx and then try again? Just to make sure you really get the latest version.

Also, since you said "The crash happens just after the first block, which contains a surveypage I use as a consent form." are you sure your testers are actually selecting the agree to consent option? If not, the script *should* actually terminate as far as I can see.

Hi Dave,

Thanks! I'll ask the person to try that and let you know.
What I can rule out is that the testers didn't give consent.

Best, Claire

Ok, that didn't do the trick.

The computer we can't run it on is a mac with Mac OS 10.7.5 and Java 1.7.0_17. I've read about problems with that in this thread here http://www.millisecond.com/forums/Topic9119.aspx#9119 , but I thought with Inquisit 4.0.2., which I use, these problems were solved. Plus, the script crashes with Chrome, Firefox, and Safari.

Claire,

you specifically mention the Java version in the above. I am confused. Does the crash occur *only when JavaWebStart is used* or also using the *Mozilla plugin* (after removing any traces of prior Inquisit Web installations)?

In any case, it would be great if you could submit your script (including any external files it requires) to inquisit<at>millisecond.com along with as many details about the affected system(s) (browser versions, OS, launch method used) and the exact symptoms of the crash (error messages if any, etc.), so the devs can look into this and make sure this gets fixed as soon as possible.

Hi Dave,

Sorry for the confusion. The crash still occurs when using just the Mozilla plugin, and there were no prior Inquisit Web installations.

I just sent the script and external files and a description of the symptoms and launch settings to inquisit<at>millisecond.com. I hope there is a way to resolve or at least  better understand the problem.Thanks for your help!

Best, Claire