My wife just bought a movie for a trip she's taking on Tuesday. She bought it thru iTunes on her signed in account on the 27" iMac and was then going to transfer it to the iPad. She has the 2nd generation iPad, I guess it's called iPad 2. However she gets this message, "Jeff who lives at home" was not copied to the iPad "Trixie's iPad 2" because it cannot be played on this iPad". Is it because she bought a HD version or something like this? Comment?