This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

Using 3.6.21, get pop up error moving from site to site of JavaScript application Exc in ev handl:error:bad NPObject as private data

  • 1 antwoord
  • 31 hierdie probleem
  • 3 views
  • Laaste antwoord deur cor-el

more options

Using 3.6.21, get pop up error box when moving from site to site. It is headed JavaScript application and says Exc in ev handl:error:bad NPObject as private data .

Using 3.6.21, get pop up error box when moving from site to site. It is headed JavaScript application and says Exc in ev handl:error:bad NPObject as private data .

All Replies (1)

more options

This issue can be caused by the McAfee Site Advisor

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).