Why Does My Paper2d Level Disappear When I Play It?

I’ve been following this tutorial: [link text][1].

After I’ve finished setting up the buttons and getting the HUD to work, when I click on New Game, it simply shows my character falling through black space until he hits the “Kill Z” set up in world settings. When hitting New Game, It’s going to the correct map, and it does the same thing when playing the map directly through the editor. It was working fine before I completed this step.

Here are a couple of screenshots of my issue. Please excuse the Megaman placeholder!

This is in the level editor with some of the world settings on the right:

And here is what it looks like when I play the level, or after I select “New Level” when I play from the main menu I created: