every time I open firefox the following message appears: what happened:TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefined" . After I press "OK" it continues, apparently normally.

13 năm trước

12:31, 12/08/2011

Everytime I open Firefox the following message appears:

what happened:TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefine

Everytime I open Firefox the following message appears: what happened:TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefine

Answer 1 · 2011-08-12 12:31:24

12:50, 12/08/2011

Troubleshooting extensions and themes

Check and tell if its working.