Update OS X Mavericks 之后 iTunes 完全sync唔到

自从update 左 OS X 10.9 (包括 iTunes 11.1.2), 就唔可以sync iPhone/iPod.
一按"sync"三秒之后变做"cancelling sync"
但系cancel 左N 分钟, 都系cancel唔到, 停咗系度.....
Restore iPhone + Macbook洗机之后, 问题仍然存在.....请问有冇人有同样问题?可以点搞?

help !!!!!!!!!!

1. Did you right click the iPhone on the side bar and chose sync in the context menu? Some report this method would get stuck on syncing, the solution is to press the sync button on the bottom right instead.

2. Try to export all your media and create a new itunes library and see if it helps.

3. If the problem still persists, I would suggest try to restore iPhone to factory setting without restore from your backup and start from scratch.