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hat happened:TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefined WHAT CAN I DO?

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

Everytime I click my Firefox icon to search the web I get this error and I have to click okay before I can actually see the web browser...

What do I need to do.

I am on the beta 4 version.

Additional System Details

Crash ID

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

Installed Plug-ins

  • Google Update
  • Shockwave Flash 10.1 r85
  • iTunes Detector Plug-in
  • Next Generation Java Plug-in 1.6.0_23 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Yahoo Application State Plugin version 1.0.0.7
  • 4.0.51204.0
  • NPWLPG
  • 12.0.1.609
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealJukebox Netscape Plugin
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • Adobe PDF Plug-In For Firefox and Netscape "9.4.1"
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; rv:2.0b7) Gecko/20100101 Firefox/4.0b7

More Information

TonyE
  • Moderator
1041 solutions 8840 answers

Helpful Reply

This type of behaviour can be caused by an incompatible add-on. Follow the procedure in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to identify the culprit. In Firefox 4 betas you can use the "Restart with Add-ons Disabled" option in the Help sub-menu to go into safe mode.