Hello, I am still having the problem, that my gem update is not working correctely and aparently this is related to a missing c-compiler or at least stdio.h ( http://www.ruby-forum.com/topic/162379#new ) Is there a downloadable c-compiler to put into the ruby path ? I do have MS Visual Studio installed on my main computer (where I now installed ruby and rails as well - but still the same problem as mentioned before), which should have a c-compiler, but I don't know how to make it available for gem. Any suggestions are very much appreciated. Best Peter -- Posted via http://www.ruby-forum.com/.