After Updating and loading message windw apears "TypeError: Components.classes[cid] is undefined" why and what to do?
After upgrading to Firefox 6.0 after opening a small message window error opens with the message TypeError: Components.classes[cid] is undefined
Réiteach roghnaithe
This issue can be caused by an extension that isn't working properly.
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.com/kb/Safe+Mode
All Replies (2)
Réiteach Roghnaithe
This issue can be caused by an extension that isn't working properly.
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.com/kb/Safe+Mode
Thanks cor-el I solved the problem The offender was "OneClick YouTube Downloader 1.07" I removed it and FireFox works OK