The xbox is also having problems.
I was able to play my initial playthrough without any hiccups, but when I went to load up my evil Lee playthrough it kept saying I'd already beaten episode 4 even though I was selecting a different saved game. This also occured when I went into my good Lee save file. And, when I looked at the stats for my evil Lee & my good Lee they were the same stats as my initial playthrough file. I would like to playthrough on my other saved files without screwing with my initial playthrough since it's my gut reaction save.
I hope Telltale decides to take a look into this issue. If not, I'll be waiting for the retail release if they decide to do a season 2. I love this game, but this sort of stuff is unacceptable.