iTunes Movie Artwork Problem

[chocolate632]

I just recently ripped Pirates of the Caribbean onto my computer and i moved it into iTunes. When I go to change the movie artwork, it shows me the spinning beachball and then the whole movie gets screwed up (when i play it, it shows a green screen or just screws up) causign em to reimport it. Any ideas why this is happening?

 

[chocolate632]

nevermind, i just reimported it and put the artwork and it worked fine