Call of duty 4 crashes in Windows 8.

My COD4PC has stopped working once upgraded to Windows 8, the error I am receiving is caused by a Punk buster malfuction, caused by a faulty module named "PBCL.DLL" in the "C:\Program Files (x86)\Steam\steamapps\common\Call of Duty 4\pb" folder, playing in non punkbuster servers will run fine, then when I go into PB enabled servers the game will result in a crash. *Worked fine in Windows 7.

Error from Event Viewer:

Faulting application name: iw3mp.exe, version: 0.0.0.0, time stamp: 0x4859a219

Faulting module name: pbcl.dll, version: 0.0.0.0, time stamp: 0x50522bb2

Exception code: 0xc0000005

Fault offset: 0x0000d08e

Faulting process id: 0x23b4

Faulting application start time: 0x01cdbec1d13fa23f

Faulting application path: C:\Program Files (x86)\Steam\steamapps\common\Call of Duty 4\iw3mp.exe

Faulting module path: C:\Program Files (x86)\Steam\steamapps\common\Call of Duty 4\pb\pbcl.dll

Report Id: 5db6d05a-2ab5-11e2-be6c-4437e60a3958

Faulting package full name:

Faulting package-relative application ID:

Original title : COD4PC Crashing - Punkbuster (PBCL.DLL)