glad to report EZSkin worked well converting toon figure with P4 shaders to PP2012 (OS X).  had never actually used EZSkin stand-alone script (too timid).  after assigning custom set in EZSkin editor, it gave small error screen in re L: drive (see below), but no errors when clicking "do it - convert all materials".

toon hair in this one would be great with some kind of strand fx, but UVMapping precludes it.