Join us and the lead editor of IRL, Mozilla's multi-award-winning podcast, for a behind-the-scenes look at the pod and to contribute your ideas for the next season, themed: "AI and ME." Mark your calendar and join our Community Call on Wednesday, Aug 7, 17:00–17:45 UTC. See you there!

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. Əgər kömək lazımdırsa lütfən yeni sual verin.

Upon launch of Firefox, get the following error message: Java Script Application, Type Error: Components, Classes [cid] is undefined. How can I resolve this problem?

  • 1 cavab
  • 7 have this problem
  • 1 view
  • Last reply by TonyE

Pawpatch
Pawpatch
more options

Upon launching Firefox 4, I get a Java Script Application pop-up window error message. The window notes: Type Error: Components, Classes [cid] is undefined.

Already checked to see if my Java was up to date and it is. Did not have this problem with the previous version of Firefox. How do I resolve this problem?

Upon launching Firefox 4, I get a Java Script Application pop-up window error message. The window notes: Type Error: Components, Classes [cid] is undefined. Already checked to see if my Java was up to date and it is. Did not have this problem with the previous version of Firefox. How do I resolve this problem?

All Replies (1)

TonyE
TonyE
  • Moderator
more options

That indicates that you are using an add-on that is not compatible with Firefox 4. For details of how to troubleshoot this to find out what one is causing the problem see https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes