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

EVERY TIME I OPEN FIREFOX I GET THIS ERROR MESSAGE: JavaScriptApplication what happened: TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefined The only option is OK

  • 1 reply
  • 3 have this problem
  • 1 view
  • Last reply by TonyE

more options

EVERY TIME I OPEN FIREFOX I GET THE FOLLOWING ERROR MESSAGE:

JavaScriptApplication  

what happened: TypeError:Components.classes['@mozilla.org/extensions/manager;1'] is undefined

  The only option is OK
EVERY TIME I OPEN FIREFOX I GET THE FOLLOWING ERROR MESSAGE: JavaScriptApplication what happened: TypeError:Components.classes['@mozilla.org/extensions/manager;1'] is undefined The only option is OK

All Replies (1)

more options

That indicates that you are using an add-on that is not compatible with Firefox 5. For details of how to troubleshoot this to find out what one is causing the problem see https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes