I just bought the Mad Men season pass and it won't sync to my 1st generation Apple TV.

I just bought a season pass to the current season of Mad Men in HD. Previous seasons have synced with my 1st generation Apple TV without an issue. But this season is not showing up on my Apple TV despite being playable through iTunes on my computer. I've removed all other content from my Apple TV, done a factor restore, made sure that the only content to be synced is the Mad Men season, and still it doesn't show up.