NxOgre bug?

Is this bug of NxOgre BloodyMess 1.5.5?
I read through BloodyMess tutorial 4 http://www.ogre3d.org/wiki/index.php/BloodyMess_Tutorial_4
and did exactly same thing what it say , but a bit difference is that i add one more cube, then i run it. In the first few seconds it works find. Suddenly two boxes fall through the floor and volume trigger, i run many time but got the same result.

What happen ?

Sorry. I solved it. My volume was not big enough.

The Visual Debugger is enabled in Git versions.

And there would still have been the RemoteDebugger of PhsyX itself that you could have used, but I recommend grabbing the git version and use the VisualDebugger.