I use add-ons FrankerFaceZ & BTTV(BetterTwitchTV) & other add-ons that worked properly before refreshing Firefox due to often crashes. Ever since I did a refresh, FrankerFaceZ & BTTV dont work anymore but others seem to work fine such as Ad-Block Plus, userstyles, etc. I try installing them back, uninstalling & installing them back, I tried clearing cache, cookies, history, I even tried uninstalling firefox & installing back again. The only thing I have not tried is installing an older version of FireFox but why do i need to do that?. How do I get thme to work back again how they use to? They seem to work on google chrome just fine.