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!

Sök i support

Akta dig för supportbedrägerier: Vi kommer aldrig att be dig att ringa eller skicka ett sms till ett telefonnummer eller dela personlig information. Rapportera misstänkt aktivitet med alternativet "Rapportera missbruk".

Learn More

Firefox 4 JavaScritpt Error when I open it

more options

When I open Firefox 4.0

Javascript Error TypeError: Components.classes[cid] is undefined

When I open Firefox 4.0 Javascript Error TypeError: Components.classes[cid] is undefined

Alla svar (3)

more options

That indicates that an add-on you have is not compatible, to troubleshoot this follow the procedure in this link - https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

more options

Hi Tony E,

Thx for your link.

I have removed the Ask Tool bar from Add-ons, after which the problem got resolved.

Hope this solution is useful to others too.

Thx/Rgds

Navi

Ändrad av Navi

more options

Please click the Helpful button next to the answer that solved your Firefox support issue, when you are logged in, so this thread gets marked as Solved.