Bone Rotation Skews Mesh

Support Animation and Rigging
1

Rigging my first character (on and off for several months now) and I have come to another problem that I can’t seem to figure out. I have the arm rig setup (based on the tutorials in the Character Animation in Blender book) but when I move the hand it shrinks. It rotates the direction I want it to, but it moves slower than the bone and also skews the mesh as it approaches 90 degrees as so:

http://img.photobucket.com/albums/v53/quelkron/models/The%20Fellow%20Players/Characters/Frederick/Arm01.png

http://img.photobucket.com/albums/v53/quelkron/models/The%20Fellow%20Players/Characters/Frederick/Arm02.png

Does anyone know what I am doing wrong?

2

You possibly have all the Verts in the hand assigned to some other Bone as well. It could be each Vertex Group, it could be the whole hand as a seperate VG or it could be all the verts in the mesh, and the other bone is probably far away from the hand itself.

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