EDIT: alright, sorry, it does not disappear, but we can only see it in WireFrame Mode, is there a way to see the shape in a normal Solid Mode?
i was following this tutorial (http://cgcookie.com/blender/2010/05/13/rigging-easy-to-animate-fingers/) but there is something i don’t understand:
i would like to use a circle instead of my IK helper bone, the one between the hand bone and the forearm bone. So I add a circle in the “Shape” field, but my arm_IK.L disappears…? Would you know why?
after i added the “shape” name in the specific field, the bone disappears: