Show errors.
you need to recompile everything from svn in order to get war3source working for cs:go
I have recompiled everything from the SVN

SM info:
SourceMod Version: 1.5.0-dev
SourcePawn Engine: SourcePawn 1.1, jit-x86 (build 1.5.0-dev)
SourcePawn API: v1 = 4, v2 = 3
Compiled on: Jun 2 2012 09:51:08
Build ID: 3550:d1e4c942dc35-dev
I 'solved' the crash. I didn't notice at first that War3Source_Extension_Helper wasn't compiling (had to remove that line which tells you not to compile it

)
Errors:
06/05/2012 - 21:22:50: SourceMod error session started
L 06/05/2012 - 21:22:50: Info (map "de_dust2") (file "errors_20120605.log")
L 06/05/2012 - 21:22:50: [SM] Plugin encountered error 8: Not enough space on the stack
L 06/05/2012 - 21:22:50: [SM] Displaying call stack trace for plugin "wc3mod/War3Source_Engine_RaceClass.smx":
L 06/05/2012 - 21:22:50: [SM]
- Line 996, War3Source_Engine_RaceClass.sp::MergeSort()
L 06/05/2012 - 21:22:50: [SM] [1] Line 996, War3Source_Engine_RaceClass.sp::MergeSort()
L 06/05/2012 - 21:22:50: [SM] [2] Line 996, War3Source_Engine_RaceClass.sp::MergeSort()
L 06/05/2012 - 21:22:50: [SM] [3] Line 996, War3Source_Engine_RaceClass.sp::MergeSort()
L 06/05/2012 - 21:22:50: [SM] [4] Line 996, War3Source_Engine_RaceClass.sp::MergeSort()
(this message is repeated 1024 times)
L 06/05/2012 - 21:22:50: [SM] Plugin encountered error 8: Not enough space on the stack
L 06/05/2012 - 21:22:50: [SM] Native "W3GetRaceList" reported: Error encountered while processing a dynamic native
L 06/05/2012 - 21:22:50: [SM] Displaying call stack trace for plugin "wc3mod/War3Source_Engine_MenuChangerace.smx":
L 06/05/2012 - 21:22:50: [SM]
- Line 613, War3Source_Engine_MenuChangerace.sp::refreshCategories()
L 06/05/2012 - 21:22:50: [SM] [1] Line 156, War3Source_Engine_MenuChangerace.sp::OnMapStart()
Cheers,