Installed DVDFabMediaPlayer on Snow Leopard, launched it : would not recognize the Blu ray disk in my reader.
Rebooted : would not start anymore !!
Seems to me the same piece of s..t as Plex, which I had installed already, and which may not be able to coexist with.
MacGo Blu-ray Player is far from perfect (no Blu-ray menus, audio issues, ...) but at least it works reasonably 9 times out of 10.