I also noticed that when you wan to create blend shapes for the head it is best to model the head separately so you have a smaller object to blend from. In my case the whole body is attached to the head. If I duplicate this (previous model by the way) and delete the body part the blend shape goes crazy. What a palarva!!!
I am in need of that new character animation book since I have question all the time developing and my 'Learning Maya' book don't give me the answers...
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