I got two DVDs at christmas and they were the first I'd tried on my DVD player. I tried one and it basically runs until the menu where it stalls, and you can only press Menu on the DVD player controls, not the screen, from which you can navigate to other episodes but you can't access special features, use audio commentary etc. I tried the other DVD I got but that worked alright after I wiped it down. The first DVD still stalled after cleaning. So I had it replaced and yet when I got a new one the exact same problem occurred, it stalled at exactly the same point. Any thoughts? Side note, they are region 2 DVDs, I had my Macbook set to region 2.