Tank treads moving when parented

[darrenlc]

Yes, I am referring to the tank treads from the Introduction to XSI 6 video. In the Animation section of the video when I try to select most of the snowmobile and then specify the main body of the snowmobile as the parent, the tank treads both transform forward in the Z axis. I tried moving the centers to the bounding box for the tank treads but that didn't help. I also think I might need to freeze something from the initial NURBS curve used to create the treads, but I cannot seem to locate the curve. I have tried toggling the Hide option, I have turned off 3D Geometry in the viewport. I know that the curve must still be there because the tank treads are working correctly and the functions within the Curve Deform still operate correctly.

This one is killing me. I am dying to finish this lesson and move on to the UV layout video. Can anyone please help me with this???