NEW iPhone 5S and now iTunes WON'T sync
I upgraded my iPhone to an iPhone 5S and now iTunes WON'T sync.
It says "The iphone "XXXX" could not be synced because this computer is no longer authorized for purchased items that are on the iPhone.
I've de-authorized and re-authorized till I'm blue in the face !! I've used this computer since i fist bought the other **** iPhone !!!
WHAT GIVES ????
Alan
iPhone 5s, iOS 7.1