[LibGdx]PPM conversion Error

Newbie & Debugging Questions
#1

I’m having trouble using the pixels per meter conversion in LibGdx. At the moment I am limited to 5 PPM, anything higher crashes. Here is an example (Didn’t get to capture the objects’ full gravity)

http://i.minus.com/iwmEg8BniGHiD.gif

EDIT: In my main launcher the window width and height:

public static final int V_WIDTH = 1000;
	public static final int V_HEIGHT = 1000/16 * 9;

In my main screen where I display the boxes:

camera = new OrthographicCamera(Gdx.graphics.getWidth()/ PPM, Gdx.graphics.getHeight()/ PPM);

Full Screen Class: http://pastebin.java-gaming.org/3f37157410b1e