--- base/Source/NSNotificationCenter.m Mon Mar 15 16:07:50 2004 +++ /E/gnustep-cvs/gnustep/core/base/Source/NSNotificationCenter.m Wed Feb 4 01:14:00 2004 @@ -735,7 +735,8 @@ object: (id)object { if (name == nil && object == nil && observer == nil) - return; + [NSException raise: NSInvalidArgumentException + format: @"Attempt to remove nil observer/name/object"]; /* * NB. The removal algorithm depends on an implementation characteristic