On one of my posts I replaced my model with yours. I noticed it was your model that caused that message and edited that post. At one point an exception was being thrown, and then I changed a few things (not very scientific, I know, but I was trying this for the first time and kind of in a hurry to see it working), one of which the model. I had fixed some things but, in replacing my model with yours, had introduced that message. But anyway, I got it working. But my 9300-poly model (+-4500 vertices) is only rendering at a measly 11 fps on a Galaxy S 2, so the test isn't very good.