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

I have a message (Java Script Application Type Error:this.tlbrRef.mntrIntrnErr is not a function) when I opened the firefox version 12

  • 2 replies
  • 13 have this problem
  • 4 views
  • Last reply by cor-el

more options

I have a message (Java Script Application) Type Error:this.tlbrRef.mntrIntrnErr is not a function) when I opened the firefox version 12

I have a message (Java Script Application) Type Error:this.tlbrRef.mntrIntrnErr is not a function) when I opened the firefox version 12

All Replies (2)

more options

hello, please try removing all toolbars in firefox > addons > extensions and in the windows control panel...

Remove a toolbar that has taken over your Firefox search or home page

more options