firefox starup problem

[upup]

Getting this alarm when opening firefox.
what happened:TypeError: Components.classes['@mozilla.org/extensions/manager;1'] is undefined

Then have to click ok.

Do anyone know how to solve this.
Got the latest ff and runs XP.

 

[medicnick83]

Uninstall, reinstall?!?

 

[upup]

Thanks, but did not work.

 

[BeoTeK]

try disabling any addons