I'm writing ruby application which should be run under windows service by using ruby's win32 service -library. I'd want to call some dotnet -libraries from my service implementation by using rubyclr-library. My problem is that ruby.exe crashes (When I'm trying to start my service) if I include rubyclr-library in my service implementation in the following way: require 'rubyclr' What do I do wrong? I have installed win32 service(0.5.2) and rubyclr (0.5.2)gems and necessarry dependencies. My service works fine without require 'rubyclr' -line (without dotnet features) so I thinkg that structure of my service should be written correctly. Miika