As stated in one of the posts above, there are 2 plugin scripts, CycleMaterials and CycleSkins, that worked in the EZSkin 3 P11 version that was broken in P12.  Y-Phil was so kind as to undertake the task of correcting those scripts and making other changes in EZSkin 3 P12.  In a nutshell, EZSkin 3.1 still looks the same but those scripts now work in creating Cycle-based material.