Hello, I've never had troubles with this game before (Played Season 1 on launch with each episode coming out and never had a single crash) until now. I bought 400 Days on the steam sale today and when I get in game it says "Coming soon" on episode status and on the play menu. I bought both the game and the DLC on Steam so it shouldn't be an issue. Proof:
I am on Windows 8 64-bit.