Program Crashes when rendering Game States

I am currently using GameStates in my program. I am not using StandardGame however, I am extending BaseGame.

My problem occurs whenever I attempt to render the contents of my GameStates.

This is my render method

protected void render(float f) {
       System.out.println("Track Marker!");

And this is the error message....

Track Marker!
08 Aug 2010 11:17:59 PM class Game.CentralGame start()
SEVERE: Exception in game loop
        at com.jme.renderer.lwjgl.LWJGLRenderer.setOrtho(
        at com.jme.renderer.RenderQueue.renderOrthoBucket(
        at com.jme.renderer.RenderQueue.renderBuckets(
        at com.jme.renderer.Renderer.renderQueue(
        at com.jme.renderer.lwjgl.LWJGLRenderer.displayBackBuffer(
        at Game.CentralGame.main(
08 Aug 2010 11:17:59 PM com.jme.scene.Node detachChildAt
INFO: Child removed.
08 Aug 2010 11:17:59 PM start
INFO: Application ending.

As you can see, the track marker message shows up, so I can assume the problem occurs at GameStateManager.getInstance().render(tpf);

Any ideas?