iPhone 5 sync won't complete, stalls at waiting for changes to be applied
From this macrumors.com post:


Close iTunes, unplug your device and reboot the computer.
On your iDevice, connect to your Wifi network &amp; leave it on and reboot it too. Now plug your iDevice back to the computer.
If you have any voice mails, delete them first.
Everything will sync and the problem goes away.