This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

ابحث في الدعم

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.

Error Message

  • 2 (ردّان اثنان)
  • 10 have this problem
  • 4 views
  • آخر ردّ كتبه garryoman

garryoman
garryoman
more options

After installing FF4 I get the following message:

Type Error Components.classes [cid] is undefined.

Help please

After installing FF4 I get the following message: Type Error Components.classes [cid] is undefined. Help please

الحل المُختار

This is an indication that you have an add-on that is not compatible with Firefox 4. For details of how to troubleshoot that see https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

Read this answer in context 👍 1

All Replies (2)

TonyE
TonyE
  • Moderator
more options

الحل المُختار

This is an indication that you have an add-on that is not compatible with Firefox 4. For details of how to troubleshoot that see https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

garryoman
garryoman صاحب السؤال
more options

Thank you for the rapid response