Hi, After installing Mono Release in 2.10.3 in Snow Leopard 10.6.8 (Mac OS), and typing ipy at the terminal, here is what i get: '/Library/Frameworks/Mono.framework/Versions/2.10.3/lib/ironruby/bin/ipy.exe': No such file or directory. So, it is looking for the IronPython exe in the IronRuby directory. Thanks for any help!