If I export a character from Character Creator, import it into Max with the CC Auto Setup, and apply an ActorCore animation to it (via FBX import), everything works fine.

If I export a character from Character Creator, import it into Max, and rig it with a CAT rig using the CC Auto Setup, everything works fine.

HOWEVER, if I try to apply an ActorCore animation to that CAT rig (with Max’s Capture Animation tool) I get some serious problems in the arms.

And yes, I am using the CAT Rig Mapping file you provided, and followed the tutorial.
(https://actorcore.reallusion.com/learn-and-support/my-software/3dsmax)

The clavicle is all weird and somehow the hands of the imported bones are offset from the CAT rig. Screenshots attached.

I’ve tested it on a straight export of CC’s Kevin model, so it should be reproducible by anyone.

Oh, and the animation I am testing this with is “walk_normal_m.fbx”

Thanks.