[Nibblet]

Maybe a wild guess, Can't look at it now.
But i think that its because of the Menu Name

Код:

CreateMenu("Emmet's gun store", 1,20,120,150,40);

there is a ' in it, dont know if it could be a problem, but try removing it
so it becomes

Код:

CreateMenu("Emmets gun store", 1,20,120,150,40);