Syncing not working, authorization message keeps popping up, no matter what.
When I try to sync all my iPhone apps/music/etc.. from my Mac air on to my iphone 4 Itunes says the computer is not authorized. Tried all the tricks given (authorize, on/off, check account, trying to only updates apps, update software) and it will once again tell me it is not authorized. After 8 hours of frustration, please advise.