Button Button! Whose got the button!

For some reason, like many other aspects of this project, the ability to create buttons has eluded me.  I have watched all of the videos, followed all instructions, and yet, still, I am missing something.  My button will light up, but never switch screens.  I haven't even made it past the trial button, so my game prototype remains a hopeless mess.  My Googling attempts are thwarted, so for now, I must write this update and continue to fight the great flash battle.