I attempted to download my first HD movie (King Arthur), basically just to see how long it would take (3+/- hrs, or 65%, before it could begin playing). I went to bed, thinking it would be finished downloading by the time I woke. Instead I found an error stating the download could not be completed. I went to "Settings-->Downloads" and tried to resume the download, only to be given error code 5103. I went to "Movies-->Rentals" and could not resume from there either; nor could I play what I had. I also powered off the ATV, and restarted it. I've Googled it, but found only users that had an identical issue with the desktop client and its resolution cannot be applied to ATV. Has anyone seen this before? According to iTunes, there appears to be 10+ GB of free space on the ATV. Thanks in advance.