Not sure if anyone except me will need this information again. Situation: A legacy RubyCocoa Application that runs fine in OSX 10.5, but refuses to compile in 10.6. RubyCocoa is working, only access to constants seems to be problematic. So far the following workarounds:

OSX::KCGScreenSaverWindowLevel ➯➤➲ OSX::NSScreenSaverWindowLevel

Bug Report and Workaround about inproper mapped constants in Bridgesupport on Snow Leopard http://lists.macosforge.org/pipermail/macruby-devel/2009-October.txt Notes Structs in Ruby