I had a strange problem. In iTunes, the Other was using up 7GB of my iPad capacity. Not good. Seems like it’s a corruption issue. To get this space back, on your iPad, go to the Settings app->General->Reset->Reset Network Settings.
Do NOT do Reset ALL Settings. I saw some posts on this. It’s overkill and forces you to restore, and waste a lot of time.
So, the iPad will show the big progress bar on the screen, and will reboot. Then sync with iTunes again. That should fix it.