Segmented bone twisting weirdly

Hello there,

I have a previous post that can now be deleted called “Ow my neck” I have found out what the problem is.

I have used segmented bones for better deformation. For some reason the bones are twisting if I add more than two which in turn is making my mesh go all odd.

Any ideas why?


Frank Bones (neck modded) with eye.blend (977 KB)