Gui problem! It's not loading

I just started the introduction tutorial and I can't start my GUI (page 11). I created "Start" button with "loadMyMission(); command - now I have a first problem with exiting Torque. Tutorial: "hitt F10 toggle the GUI Editor and exit torque"....impossible. After toggling you can see main GUI with start button and there is no way to exit - I have to exit by ending the program with task manager from window. As I am restarting demo - I have my new GUI, I am pressing Start, it opens "waiting for server" window and that's all - no loading! Please help me - I can't continue tutorial with out this step.