From: "Eric C." Date: 2012-04-11T05:58:07+09:00 Subject: Re: Add a GUI to your Ruby Script Hi: I think there are two possibilities: 1) Perhaps you edited the glade file for coinflip, and it now has a gtkbox in the xml. You could uninstall the gem and start over to make sure: sudo gem uninstall coinflip. Then install it again. 2) You need to be using gtk2. The gtkbox is part of gtk3 (I think) Make sure you're using gtk2. Let me know if it works. Also, you may want to just skip the coinflip program. There are several example projects that ship with visualruby. Try those too. Let me know how it goes. Yours, Eric Eric -- Posted via http://www.ruby-forum.com/.