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.

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

What can I do about this: After upgrading to firefox 6, I get this error. TypeError: Components.classes[cid] is undefined???

  • 2 (ردّان اثنان)
  • 13 have this problem
  • 4 views
  • آخر ردّ كتبه cewj1967

more options

What can I do about this: After upgrading to firefox 6, I get this error. When I click to open Firefox, A box open with the following error: JAVASCRIPT Application TypeError: Components.classes[cid] is undefined? After I click close on the box, then Firefox will start. I really just want to get the error fixed so that when I want firefox open, I don't have to see this box anymore.

What can I do about this: After upgrading to firefox 6, I get this error. When I click to open Firefox, A box open with the following error: JAVASCRIPT Application TypeError: Components.classes[cid] is undefined? After I click close on the box, then Firefox will start. I really just want to get the error fixed so that when I want firefox open, I don't have to see this box anymore.

الحل المُختار

You need to figure out which add-on is causing that error and disable it until the developer of that add-on fixes it. There may be an error message about that in the Error Console, accessed through the Web Developer menu item or through {Ctrl + Shft + J}.

Also see this:
http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+themes

Read this answer in context 👍 0

All Replies (2)

more options

الحل المُختار

You need to figure out which add-on is causing that error and disable it until the developer of that add-on fixes it. There may be an error message about that in the Error Console, accessed through the Web Developer menu item or through {Ctrl + Shft + J}.

Also see this:
http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+themes

more options

I appreciate your help. I found that my Java console was the error and I have updated it and the problem has been solved.

Thanks again for your help in this matter.