I am stumped. I cannot get this working in 4.7. As I have said the collision mesh exists but it does not render. I am going to start fresh and do the tutorial step by step to see if I can get it working then add in the other stuff and see where it breaks (U.V.'s, vertex colors, smooth meshing, …). I am digging the VR features of 4.7 too much to stay in 4.6 any longer. It is time to bite the bullet.