Poker Night at the Inventory stopped working.

[Quba]

I have purchased the Poker Night at the Inventory via Steam a while back and despite of a few gameplay glitches, enjoyed it very much.

Recently, however, the game refuses to launch. After displaying the TTG logo splash screen, the game crashes with the message: CelibrityPoker.exe has stopped working.

Here is the detailed information on the most recent crash, copied from Windows Event Viewer:

Faulting application name: CelebrityPoker.exe, version: 2010.12.3.50720, time stamp: 0x4cf97084
Faulting module name: CelebrityPoker.exe, version: 2010.12.3.50720, time stamp: 0x4cf97084
Exception code: 0xc0000005
Fault offset: 0x0038d1b6
Faulting process id: 0xc74
Faulting application start time: 0x01cb99329440ddcb
Faulting application path: c:\program files (x86)\steam\steamapps\common\poker night at the inventory\CelebrityPoker.exe
Faulting module path: c:\program files (x86)\steam\steamapps\common\poker night at the inventory\CelebrityPoker.exe
Report Id: ddda6def-0525-11e0-b672-20cf30213a67

I am running Windows 7 Ultimate x64, and have already checked both video and audio drivers - both are the most recent WHQL versions available.

The computer is quite beefy (Intel i7 980X, nVidia 480GTX, 24GB of RAM, tons of disk space, etc.) so it is more than enough to handle the application.

I would appreciate some help in this matter, as at the moment I am completely unable to play the game.

Edit:
It may be helpful if I mention that I have already deleted, re-downloaded, integrity-checked and went through all the standard procedures, none of which helped.

[Quba]

Nothing?