If you’re like me, you just upgraded iTunes to the newly-released 8.0.1 version. And then you plugged in your iPhone and were greeted by repeated popups telling you your iPhone “cannot be synced unknown error (13014)”. And then you cursed Apple for screwing simple things up.
But have no fear, there is a simple fix! Just quit iTunes and start it up again. Everything should now be fine. You may have to restart your phone, too, but I didn’t.