Sorry for the post in the max forum, there didnt seem to be a motionbuilder forum.
I am importing c3d into mb and then attaching to an actor, importing in a CAT rig and baking animation, then finally sending back to max. Its been working brilliantly, so smooth and easy with the 'send to' command.
The last few mocaps i have attached to an actor have not quite worked though. When i attach all the markers and then press active, the right forearm jumps out of position completely.
Is this a common problem? I have attached an image showing the error, as you can see the left forearm is fine.The small white markers inside the blue ones move with the right arm.