It is unfortunate. However I have discovered a temporary fix. Go to tools, locate and click on options then go to the privacy and security section. Scroll down until you find "firefox data collection and use" click on the first empty box that says allow firefox to send technical and interaction data to mozilla and the second empty box that says "allow firefox to install and run studies. Only those two boxes need to be checked. If any other boxes are checked, uncheck them. Your add-ons should return and work as normally afterwards.