srcds.exe crash!

[kaotik]

Hi, i have updated my version of left4dead2 today and since updating i cant open srcds.exe. There is no error message and a mdmp file is created.

Things i have tried to fiix the problem:
Removed all addons.
Removed all custom cfg files.
Validated game files and made sure nothing is missing or corrupt.

Here is the mdmp file that is created if anyone can debug these:

http://www.multiupload.com/XCSG46CQXS

Any help appreciated. Thanks