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what will get rid of "EXC in EV handl: error bad NP object as private data"?

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I am taking some online classes and whenever I am trying to do homework or send in my assignments or take a test this error report comes up: EXC in EV handl: error bad NP object as private data. What does this mean and how do I get rid of it? I need to be able to do my college work online and know that it is getting to the instructor. How can I know if my assignments and test and any other communication with my college are getting to the right place?

I am taking some online classes and whenever I am trying to do homework or send in my assignments or take a test this error report comes up: EXC in EV handl: error bad NP object as private data. What does this mean and how do I get rid of it? I need to be able to do my college work online and know that it is getting to the instructor. How can I know if my assignments and test and any other communication with my college are getting to the right place?

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Please see solution in http://kb.mozillazine.org/Problematic_extensions for "McAfee Site Advisor".

(Windows): For best results you should uninstall McAfee Site Advisor from Control Panel > add/change programs (Programs and Features). Reboot the system. Then Reinstall from http://www.siteadvisor.com/ and reboot the system. When installing refuse other suggested (crapware) applications.


Please mark "Solved" one answer that will best help others with a similar problem -- hope this was it.