I don't know if this will help, but you can try reinstalling game studio. Also, don't forget the extras in the file "goodies" on the 3dgs cd, they won't help with your build/execute problem but they are worth copying and pasting them into your directory. Make sure you have the system minimum requirements too for running 3dgs. If this doesn't work and you are still getting nothing when you build and execute (in other words no dialogue windows or anything) try emailing game studio support. You get 3 months with the commercial edition and they normally respond within a day or two.