Pix,

Where did you get your IK rig. I am having a real hard time getting it to function properly. Like I said in the other post, when I bound the skin with less influcences, the skin didn't seem to have nearly the problems.

However, I am really struggling with your IK rig. When I just screw around with the bones, the mesh seems to follow relatively ok.

There is an IK rig that comes with Maya. I have used it before very succesfully. You can delete some of the unneeded nodes.