I made the mistake this morning of letting Firefox upgrade itself on my desktop without doing any digging around to see if people were having problems with it. Normally I do that, but I had stopped worrying about it for Firefox. Stupid me.
Upon restarting Firefox, it appeared that the theme I use was gone. Then I noticed my plugins weren’t showing up. After attempting to look for updates or settings and having FF lock up on me, I was pissed. There’s no way I’m reinstalling this thing…too many settings and add ons that would be a bitch to recover.
I jumped over to my laptop and started searching around (was going through withdrawls without my normal FF setup). After digging through a few sites and seeing posts about it without any solutions being presented, I started looking for similar problems happening with past updates (those would have had enough time for a solution to be presented). That search led me to this. It worked…woohoo.
Corrupt extension files
Files that store information about the extensions you have installed can sometimes be corrupted. Deleting them can fix a number of extension issues; they will be regenerated the next time you start Firefox. [5][6]. Exit Firefox completely, then open your Firefox profile folder (read the linked article for its location) and delete these three files:
extensions.ini
extensions.cache
extensions.rdf
