Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Jave Script error when opening any page.

  • 1 reply
  • 2 have this problem
  • 9 views
  • Last reply by cor-el

rodhigh
rodhigh
more options

Whenever I load a page into Firefox I get the following error message: "[javascript application] Type Error: Components Class [CID] is undefined" This has happened with the last few versions of Firefox.

Whenever I load a page into Firefox I get the following error message: "[javascript application] Type Error: Components Class [CID] is undefined" This has happened with the last few versions of Firefox.

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

This issue can be caused by an extension that isn't working properly.

Do you have any AVG extensions or toolbars installed?

  • Tools > Add-ons > Extensions

Start Firefox in Safe Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).