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type error components.classes@mozilla.org/extensions/manager,/is undefined(This message comes up when I click on mozilla to search internet


When I click on mozilla to search internet the error comes on. I have installed mozilla 3.6, 4.0 3.4 on my desktop

Mehr Details zum System

Das passierte

Immer wenn Firefox geöffnet wird

Das begann, als…

about a week ago.

Installierte Plugins

  • np-mswmp
  • Office Plugin for Netscape Navigator
  • 1.9.0042.0
  • 2.0.0048.0
  • Hotbar Firefox Plugin
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe PDF Plug-In For Firefox and Netscape "9.3.3"
  • Default Plug-in
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealJukebox Netscape Plugin
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Shockwave Flash 10.1 r82
  • Adobe Shockwave for Director Netscape plug-in, version 11.5
  • iTunes Detector Plug-in
  • Next Generation Java Plug-in 1.6.0_21 for Mozilla browsers
  • 4.0.50524.0
  • Bing Bar
  • Office Live Update v1.5
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • My Web Search Plugin Stub for 32-bit Windows
  • RealPlayer(tm) HTML5VideoShim Plug-In


  • User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv: Gecko/20100722 AskTbAUD/ BRI/1 Firefox/3.6.8 ( .NET CLR 3.5.30729; .NET4.0C) FBSMTWB

Weitere Informationen

every time i click on the mozilla emblem I get the message concerning my question.

schweingrubg 0 Lösungen 1 Antworten

Hilfreiche Antwort

I have this problem too on Firefox 4.0 Beta 3

smdjkd001 0 Lösungen 1 Antworten

Hilfreiche Antwort

ask toolbar add-in disable it problem goes away

stammeshaus 0 Lösungen 1 Antworten

It is not an extension that causes the problem, it is the extension maganer that crashes. Cannot open The add-ons window at all: Firefox crashes completely.

  • Moderator
1041 Lösungen 8840 Antworten

stammeshaus, try running Firefox in Troubleshoot Firefox issues using Safe Mode, and use it to disable all extensions. The error message is caused by an incompatible add-on. I have seen reports of it with a few add-ons, this is due to changes in Firefox which made the add-ons no longer work.

  • Top 10 Contributor
  • Moderator
10738 Lösungen 96600 Antworten

The extension manager can crash with a possible cause of corrupted files extensions.* in the Firefox Profile Folder

You can delete the files extensions.* (extensions.rdf, extensions.cache, extensions.ini, extensions.sqlite) and compatibility.ini in the Firefox profile folder to reset the extensions registry. New files will be created when required.

See "Corrupt extension files": http://kb.mozillazine.org/Unable_to_install_themes_or_extensions

If you see disabled extensions that are not compatible on the next start in "Tools > Add-ons > Extensions" then click the "Find Updates" button to do a compatibility check.

Kodiakco 0 Lösungen 1 Antworten

After reading a few posts, I looked thru my extensions. I disabled Ask.com tool bar and the problem went away.

billybilly123 0 Lösungen 1 Antworten

Just go to tools then add-ons you will find extensions , open and there you will find Ask.com , just delete it , but this is only if you already deleted the ask tool bar from control panel and you didn't delete it from the extension add-ons , that;s why it makes this error if you delete the ask.com tool bar and you left this without deleting it. Cheers guys

topito 0 Lösungen 1 Antworten

I have this problem too on Firefox 4.0

EHHconsult 0 Lösungen 1 Antworten

Uninstall the mozilla including personal info and re-install. problem is solved.

sandyron 0 Lösungen 1 Antworten

I disabled the Avery toolbar extension and no longer have this problem.  :)

Geändert am von sandyron

Mugzi 0 Lösungen 7 Antworten

Removing the ask toolbar worked for me as well.. I don't get why big companies like ask release things that make browsers bug out?!?!