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TypeError: Components.classes[cid] is undefined

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Grand Master

TypeError: Components.classes[cid] is undefined

TypeError: Components.classes[cid] is undefined

URL of affected sites

http:// google.ru

33 REPLIES
Site Moderator

Re: TypeError: Components.classes[cid] is undefined

The error "TypeError: Components.classes[cid] is undefined" is probably caused by an extension, maybe XPL Link scanner.

Start Firefox in Troubleshoot Firefox issues using Safe Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes). See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems

If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears. You can use "Disable all add-ons" on the Safe mode start window. You have to close and restart Firefox after each change via "File > Exit" (on Mac: "Firefox > Quit")

Grand Master

Re: TypeError: Components.classes[cid] is undefined

i also have the same problem.....


"TypeError: Components.classes[cid] is undefined"

this is the error message.....

Grand Master

Re: TypeError: Components.classes[cid] is undefined

In my case, I disabled the RealPlayer Browser Record Plugin.

New User

Re: TypeError: Components.classes[cid] is undefined

enlevez l'add-one BuiObab si vous l'avez moi sa a fonctionner remove the add-one BuiObab me if you run Entfernen Sie das Add-on BuiObab mich, wenn Sie laufen rimuovere l'add-one mi BuiObab se si esegue あなたは、saを実行する場合、アドインを一BuiObabを私削除 удалить адд-оне BuiObab мне, если вы запустите verwijderen van de add-one BuiObab me als je

New User

Re: TypeError: Components.classes[cid] is undefined

In my case, it was AVG Safe Search.

Particularly annoying because this was certainly disabled when I installed b9 but I notice it is showing as enabled (by itself, not by me) on both of my machines.

Why does this extension not have a "remove" button?

Why does firefox *allow* AVG to install uninvited extensions, enable them without asking ? Can't firefox blacklist extensions that do this and prevent them from being installed at all ?

New User

Re: TypeError: Components.classes[cid] is undefined

10 months ago I wrote an extension for ff3 and it wotrks fine, but now in ff4 I get this error.

how should I fix my extension?

my extension uses XPCom

Site Moderator

Re: TypeError: Components.classes[cid] is undefined

A forum better suited to ask such questions is this mozillaZine forum:

You need to register on the MozillaZine forum site in order to post at that forum.

New User

Re: TypeError: Components.classes[cid] is undefined

I just disabled the Crawler Toolbar for a while and the Problem went away

New User

Re: TypeError: Components.classes[cid] is undefined

in my case, windows xp, firefox 4.0 the offending add-on is ip changer 2.0 by iprivacytools.com