I used avastar to rig a mesh head and it looks fine until I animate or pose my avatar, the head deforms. I'm new to rigging and meshing so it would help greatly if someone can explain to me why I'm running into this issue and how I can go about fixing it. It looks like this: http://i58.tinypic.com/23pp38.jpg The left is what it looks like regularly and on the right is when I pose. It stretches/deforms. I'm using blender and avastar