Hi guys, maybe someone can help me out.

I'm running a 64 bit system on Win 7

The game has been fine up to today, I try hitting Continue to play a bit before work and the game refused to load, it just set there at the loading screen. Every time I try to click it just kept saying, program is not responing.

Any idea?

Had the same thing happen to me with Win 7 64.  Had to go to taskmaster and end the game.  Also quit steam client.  Then reloaded steam client and hit play.  Worked fine after that.