Script not loading on _root

Hey guys. I have a very strange problem.

Ive just been stuffing around with this little game, and its been working perfectly up until now. The reason? I have just added another frame for a title and menu. And now when you click “Start” on the menu, and it takes you to the game; The hero wont move, the enemies wont spawn and the music wont play. Its like the script is just not loading. But when I remove the menu frame (leaving only the one frame with the game on it) it works fine again.

Does anyone know what the problem could be?

Thanks in advance