Sorry for my English.
I have a problem with my animation in Sketchfab: https://sketchfab.com/models/6749941687384307bb351220d055fef7
How you can see, hands don't work. But when I import FBX file in Maya or Unity everything is fine. I've tried to upload the animation in Sketchfab with a proxy geometry (not skinned) and it worked fine too. May be there is the problem in my skinning?
Or, may be, it happens because my rig has the separated shoulders (I need this for a shrug etc). This bones works with an Point Constrain in Maya. It looks like this: http://oi67.tinypic.com/auz3mv.jpg
So, how can I fix it for Sketchfab?