Kdevelop - Ruby

Hi, I'm just starting to try and program using Qt and ruby using kdevelop version 3.3.3 on SuSE 10.0. As a starter I'm trying to get a very simple application working as per http://www.kdevelop.org/doc/technotes/rubyrad.html Now either I'm doing something wrong or there is something missing in the steps shown in the above document. On building the project the button does not appear on the window. The button widget does not appear to be created in any of the files. Does anyone know what I'm doing wrong. -- Regards, Graham Smith