No matter what plugin I try to install in firefox, it doesn't work. I always get the same error message. It always says it doesn't exist even though it just finished downloading it and it clearly does exist. This has happened since day one regardless of how many versions I've updated to. It is literally the only thing stopping me from using firefox and ditching Safari. I'm posting a picture of the error message.
Anyone know how to fix it?
Anyone know how to fix it?
