Rig Issue: Mesh falling off bones?

Mahsa

So this model was working fine when I rigged and skinned it previously with an unfinished model, but when I got the new mesh and reattached it to the same set-up, it's been freaking out. I'm not sure if I did something small that I just can't think of that's making this happen.. or if I messed up big, but this is the problem:

When I move the IK arm by itself, the mesh looks just fine.



But when I move the Root, the mesh jumps right off the forearm of the IK arm.


This doesn't happen in FK mode for the arms, so I thought I just skinned the mesh to the wrong bones. I didn't. I've checked and rechecked the mesh and it's skinned to the correct string of bones. Anyone have any idea what I'm doing wrong? Or what I'm overlooking?

Thanks so much for your time, guys!

gammaRascal

Just a shot in the dark here - Unless your wrist/hand control objects are constrained to a rooted control object [not necessarily a 'root' control object but just something that is ultimately in the hierarchy and those hand control objects are contained to that], they won't move when you move the root and the geometry can do funky things - especially when IK/FK is involved.