I'm getting a Javascript Application Error that says "Exc in handl: Error: Bad NPObject as private data!" What does it mean and how do I get rid of it? I'm running windows 7

This error comes up when I'm on the internet whether I am going to a website or checking my email. It seems to appear mostly when I am trying to close a tab...I'm running Windows 7 on an Asus Eee PC

This issue can be caused by the McAfee Site Advisor extension
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

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    This issue can be caused by an extension that isn't working properly (McAfee Site Advisor).
    *https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
    Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
    *Don't make any changes on the Safe mode start window.
    *https://support.mozilla.com/kb/Safe+Mode

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  • Exc in ev handl: Error: Bad NPObject as private data! what is this an how do i get rid of it...

    Exc in ev handl: Error: Bad NPObject as private data!

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

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    Disable McAfee siteadvisor and check the problem still persist or not?

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

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    This issue can be caused by the McAfee Site Advisor extension
    *https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
    Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
    *Don't make any changes on the Safe mode start window.
    *https://support.mozilla.com/kb/Safe+Mode

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    That issue can be caused by the McAfee Site Advisor extension
    *https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
    Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
    *Don't make any changes on the Safe mode start window.
    *https://support.mozilla.com/kb/Safe+Mode

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    That issue can be caused by the McAfee Site Advisor extension
    *https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
    Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
    *Don't make any changes on the Safe mode start window.
    *https://support.mozilla.com/kb/Safe+Mode

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