Tripwire Interactive Forums

I have bought the KF2 digital delux edition and can't get it to work. Everytime I press play the little black box apears that says "now starting killing floor 2" and then nothing happends other then my profile turning green for a moment and then back to blue.

I have tried the following things:

-I updated my drivers
-I restarted Steam, reinstalled KF2, restarted my PC
-I used the verify game cache option in steam
-I tried running it as an admin
-I run all the Commenredist applications
-Deleted and reinstalled Nvidia physics
-Deleted my docs/my games/killing floor 2/kfgame/config folder
-Deleted my client regestry
-Disconnect USB controllers and other HID devices except for keyboard and mouse
-I added -dx10 -windowed to my launch options via Steam.

My specs are:
AMD Radeon HD 7570 Graphics card Intel Core i7-2600 CPU 3.40 GHz Processor 16 GB RAM and a 64 bit system software

Nothing I tried has worked so far, any ideas? Oh and thanks for the help in advance!