Purchased TV Show Artwork Not Appearing

This past week I purchased the first four seasons of "The Office" on my Apple TV 2, and while seasons 3-4 were fine, I've noticed the artwork for seasons 1-2 do not appear. For instance, I'll go to TV Shows, Purchased, Comedy, The Office, and then go to either season 1 or 2, and instead of the artwork above the episode number and description, it's just a black box. When I click on the episode, the artwork is instead an eighth note, exactly what you see in iTunes when no album artwork is available.

I've checked my internet, I've signed out and back in, I've reset, I've even restored, and this problem persists. I realize that it's more of a minor, nitpicky thing, but I'd like to have the artwork properly displayed. Keep in mind, I am referring to TV shows that are in the Purchased area of the TV Shows section, not stuff that I'd watch through Home Sharing in iTunes.

Thanks!

Any insight into this problem would be greatly appreciated.

Thanks!