Well I inserted a sprite, but broke the game completely. I'm not sure what happened exactly, but I'll try it again after some sleep. I used the first sprite as a template. That means that the number increases by one each time instead of two, right?
EDIT: Nope... I did it again. Did everything the same except for using the first sprite and not the second. The game still doens't get past the intro. If anyone knows what may cause this, please help.