搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

Learn More

Receiving this error "TypeError: Components.classes[cid] is undefined" when opening Firefox 4. Never received this prior to upgrading to version 4.

  • 1 回覆
  • 9 有這個問題
  • 最近回覆由 TonyE

more options

Also receiving this error when logging on to some websites. Able to close the error screen and continue but it is aggravating.

所有回覆 (1)

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