I'm trying to work my way through the "little planet tutorial" on eovia's site,
http://www.carrarastudio.com/tutorials/littleplanet/part3/
but I've hit a snag. I can move and rotate my car without trouble as long as I'm at time 0:00, but once i'm setting animation keyframes at any point afterwards I can't seem to use the rotation control. I can select the tool, the object, and rotate the object to the desired position, but when i release it, the object snaps back to its original point.

I've even tried setting the coordinates by hand in the yaw control of the motion/transform properties control panel. This puts the object at the point I want, but when I watch the animation from the beginning its as if the yaw coordinate entry was ignored.

What could be controlling the object in this fashion?

Thanks
Brendan