diff -r 3730cd7bf1e7 -r b0740093756d extensions/sdktools/vcaller.cpp
--- a/extensions/sdktools/vcaller.cpp	Thu Aug 16 07:40:06 2012 -0400
+++ b/extensions/sdktools/vcaller.cpp	Mon Aug 20 21:53:59 2012 -0400
@@ -129,7 +129,7 @@
 		{
 			return 0;
 		}
-#if (SOURCE_ENGINE == SE_ORANGEBOXVALVE) || (SOURCE_ENGINE == SE_LEFT4DEAD2)
+#if (SOURCE_ENGINE == SE_CSS) || (SOURCE_ENGINE == SE_ORANGEBOXVALVE) || (SOURCE_ENGINE == SE_LEFT4DEAD2)
 		s_call_addr = memutils->ResolveSymbol(handle, &sig[1]);
 #else
 		s_call_addr = dlsym(handle, &sig[1]);