Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Error msg received on opening tab: Exc in ev handl: Error: Bad NPObject as private data!

  • 1 nzaghachinzaghachi
  • 1 nwere nsogbu anwere nsogbu a
  • 1 view
  • Nzaghachi ikpeazụ nke David McRitchie

more options

Very simple- the following error message appears when I open a new tab, either with a web page or blank: Exc in ev handl: Error: Bad NPObject as private data!

Very simple- the following error message appears when I open a new tab, either with a web page or blank: Exc in ev handl: Error: Bad NPObject as private data!

Asịsa ahọpụtara

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.

Gụọ azịza a na nghọta 👍 0

All Replies (1)

more options

Asịsa Ahọpụtara

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.