Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Apple releases iCloud update for Apple TV
Apple has just made some behind the scenes changes to the iTunes Store cloud as the new iOS 4.3.3 firmware update was released for Apple TV The IOS was released only a few minutes ago.It is now possible to re-download purchased television shows in iTunes.
You can do this by going to the Purchased tab in the iTunes Store section of the iTunes desktop app.This latest release comes with the ability to re-download purchased apps, e-books and music in desktop iTunes, which has been in place for some time.
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