Every time i try to launch the game i'm getting a Data Execution Prevention error and crashing back to the launcher. I've tried every single suggestion i've found on these forums. I've yet to find any other posts anywhere of anyone having this particular problem with the game so i'm assuming it's something with my system. Hopefully someone can help.

Windows Vista 64 bit
Intel core I7 2.67
Radeon HD4850 512mb

And here's the crash log:

Problem signature
Problem Event Name: BEX
Application Name: witcher2.EXE
Application Version: 1.0.6050.43457
Application Timestamp: 4dd0dbcc
Fault Module Name: StackHash_7dc0
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 71190000
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.0.6002.2.2.0.768.3
Locale ID: 1033
Additional Information 1: 7dc0
Additional Information 2: b4ee5de6a2322745523997a782b35692
Additional Information 3: 027b
Additional Information 4: 277e19c30fbd5f6bb531ec9e027c37c3

Extra information about the problem
Bucket ID: 1970227932

I've made sure the DEP is on the default setting, and even tried to add Witcher2.exe and Launcher.exe as exceptions but it says they're not compatible.

Any input would be appreciated.

Hey Spine shank,

Did you end up resolving this issue? I have the same problem, which is pretty annoying when i've just sunk $100 into a game and then can't install it. Wanted to support Gog over Steam but now I'm regretting my decision

Where did you install the game?

Gog somehow broke Galaxy for some Windows 7/8.1 users in recent patches, so its recommended temporarily to rollback to 2.0.37 version and prevent autoupdating until the incoming fix gets published.
For all that info, read through recent relevant topics in Galaxy subforum.

Thanks heaps for the hot tip mate, Ill give it a go