I'm having some trouble with the artwork in my itunes/appletv. I have a few movies set up a series (i.e. Star Wars, Resident Evil etc). The first movie's artwork is correct, but then each movie after it shows up with the first movie's artwork. When I click on "Get Info" and show the video artwork, it shows the correct one, but the thumbnail in iTunes and on the ATV is still not correct. Any suggestions on how to fix this?