setting customizationEnabled causes FF crash

I'm trying to configure a web-enabled/embedded JMSketch so the end-user (a student) can't change the display configuration.





If I'm reading the docs correctly, msketch_param("customizationEnabled", "false") should take care of (part of) that.





However, as soon as I include this specific tag my browser crashes. This is entirely reproducible with just this tag on FF 3.0.5 and MSketch 5.1.3. I can't seem to reproduce this on IE 7.0.5730.13 or Safari 3.2.1, however.

Dear Michiel,





do you use any other parameters when this happens? (In case you use a custom configuration file, this parameter is set to false automatically, i.e. there is no way to change the configuration via the GUI.)





Version 5.1.3 had two instant fixes, did you use any of them, like 5.1.3_2?





On WinXP I couldn't reproduce it, but my colleague being on holiday till Friday will try to reproduce it on Mac as soon as he is back.





Kind regards,





Judit

Quote:

Dear Michiel, do you use any other parameters when this happens? (In case you use a custom configuration file, this parameter is set to false automatically, i.e. there is no way to change the configuration via the GUI.)

  





I am trying to invoke the menuconfig.xml from the Student Exam example (unmodified).





On its own, this seems to work OK.





I have then modified the script block:





msketch_name = "MSketch";


msketch_begin("/marvin/", 300, 200);





msketch_param("scale", 44);


msketch_param("skin","javax.swing.plaf.metal.MetalLookAndFeel");





msketch_param("detach", "hide, maxscale=44");


msketch_param("undetachByX", "false");





msketch_param("menuconfig", "/examples/applets/sketch/studentexam/menuconfig.xml");


msketch_param("templateToolbarCustomizable", "false");





msketch_param("extraBonds", "coordinate");  





msketch_param("valenceErrorVisible", "false");   


msketch_param("addRemoveHatomsEnabled", "false");





msketch_param("sketchCarbonVisibility", "on");


msketch_param("explicitH", "true");


msketch_param("implicitH", "off");





msketch_param("lonePairsVisible", "true");


msketch_param("lonePairsAutoCalc", "false");





msketch_param("molFormat", "cxsmiles");


msketch_param("mol", "$dat[$a][3]");





msketch_end();





So far, so good.





If I then try to insert:





msketch_param("customizationEnabled", "false");





At which point FF 3.0.5 on WinXP SP3 crashes. IE 7.0 and Safari 3.2.1 on the same system seem to be OK with this.





I am trying to create a standard environment in a wrapper that I can


present to faculty, who are in charge of writing the actual content


(only the "mol" parameter should be set by faculty). I need it to be


robust and relatively safe from tinkering by students, so I want to set


as many explicit options as I can that cannot be readily undone by


students. The main browsers currently in use are FF 2/3, IE 7/8, and


Safari 3. I expect Chrome 1 to come into play, but we only test the


first three codebases. Since FF is the most error-tolerant of the


three, I thought this problem rather strange.

Quote:

Version 5.1.3 had two instant fixes, did you use any of them, like 5.1.3_2?

  





We are using 5.1.3_2, indeed.

Quote:

On WinXP I couldn't reproduce it, but my colleague being on holiday till Friday will try to reproduce it on Mac as soon as he is back. Kind regards, Judit

Loading the following page now causes the same behavior: http://www.webassign.net/marvin/examples/applets/sketch/chemicalterms2.html





FF 3.0.5 crashes (see attached image)





IE 7.0 load but throws an error (see attached image)





Safari 3.2.1 loads OK, but not all functions seem to be working.

Dear Michiel,





the page reports several problems, such as

Code:

Access denied: read user.home property

  





It seems that the applet on this site is not properly signed, this can cause problems.





Some information on applet signing: http://www.chemaxon.com/marvin/help/developer/applets/signing.html

Quote:

Dear Michiel, the page reports several problems, such as Code: Access denied: read user.home property     It seems that the applet on this site is not properly signed, this can cause problems.

We have not changed, signed, or unsigned any of the content there. This is the out-of-the-box clean installation demo-page provided by ChemAxon...

Quote:

Some information on applet signing: http://www.chemaxon.com/marvin/help/developer/applets/signing.html

Yes, I've also seen it on the screenshots you recently sent.





There must be some technical problem. I'm asking my colleague Tamas if he can help.

We have checked your example on the same platform. Our experience is that the applet is stable both in Firefox and in IE. We have not found the trace of any browser crash or any popup error message by the browser.





There is only one problem with your example: if license file is missing, a couple of calculations (that require license) do not give back result.


If you take a look at to the Java Console, you will see warning messages that notifies you about the lack of licenses.





If you complete the license file, these warnings disappear and above calculations will be enabled.





An other warning can be printed to the Java Console: "Access denied: read user.home property". Evaluator drops this warning when its custom configuration file is not available. Its present is optional, normally you do not need it. I admit that the message is misleading. We will change it.