Well everytime I close firefox and reload it my addons are not on. I go to the add ons tab and it says that they are on but they are not. How can I fix this problem? I really need my gmail notofication addon to work all the time.
If you see disabled or not compatible extensions in "Firefox/Tools > Add-ons > Extensions" then click the Tools button at the left end side of the Search Bar to check if there is a compatibility update available.
If this hasn't helped then also delete the addons.sqlite file.