I'm toying around with Bullet Physics in Poser Pro 11, but I cannot get anything to collide with anything else. In a simple scene, I have a high-res sphere underneath a cloth plane. The ball is Choreographed and the plane is Soft Dynamic, but the latter still just goes straight through the former and lands on the Ground. I've tried enabling collision detection on both props, but that had no effect. Does anyone know what I could be doing wrong?