I have a PC and I have the similar problem with the injection morphs head and body not functioning, except that i haven't had the head enlarge. Things seemed to work before I upgraded to Poser7 SR2.1 and the latest updates. I don't know enough to know if the updates to know if they are the problem. I was wondering if there is a way to uninstall the updates.

I did load V4.1 and the V4.1 morphs before trying to use the injection morphs for the V4.1 characters.