Firefox needs one addon to be disabled to work correctly

[Sayak Banerjee]

Firefox does not work correctly (ie, does not open websites when typed address in address bar, does not recognise Ctrl+Enter etc) when addons are added, until one of them is disabled.

To reproduce:
Start with a fresh install of Firefox (or delete ~/.mozilla)
Now install a handful of addons, for example-- I installed Tab Scope, Fission, Greasemonkey, Adblock Plus, Fast Dial and Chromifox from http://addons.mozilla.com. Install them at one time without restarting FF in between. After installing all, restart FF. Now try typing any address and press Ctrl+Enter at the address bar, and it will do nothing.
Now goto Tools->Addons and disable any addon (for example, I disabled Fission) and again, restart FF. It works okay then. It has nothing to do with fission addon as I have checked and reproduced this with a different set of addons also.

[John Vivirito (gnomefreak)]

This is a problem with extensions not firefox.