Hello, > oh i'm sorry, i thought it was said on the gtk# webpage that it worked > with pnet. its the DotGNU compiler (cscc) and runtime (ilrun). It most likely ran on the early days of Gtk#, but as Gtk# has evolved, it uses more features from the underlying framework which are likely not implemented on pnet. For now you will need to use Mono, Rotor or .NET. Miguel.