--- old/emu/mame.c	2013-07-28 21:23:24.000000000 -0700
+++ src/emu/mame.c	2013-01-11 07:32:48.000000000 -0800
@@ -171,8 +171,8 @@
 		// otherwise, perform validity checks before anything else
 		if (system != NULL)
 		{
-			validity_checker valid(options);
-			valid.check_shared_source(*system);
+//			validity_checker valid(options);
+//			valid.check_shared_source(*system);
 		}
 
 		// create the machine configuration