I've actually gone a strange route. Figuring that my only real use for P4PP was to allow importing of Poser scenes in other apps (C4D and LW, in particular) and the fact that P5's library directory structure is better, I reduced the P4PP Runtime to the basic install and moved everything to P5. Now that doesn't seem strange, but, in order to load P5 scenes into P4PP to save out and then load into C4D and LW, I had to duplicate the Geometries and Textures directories of P5 within P4PP (otherwise, it tries to load the P5 scene and fails when it cannot find the necessary parts). My method is an accident waiting to happen, but will have to do until CL releases the P5PP and someone makes a P5 C4D plugin.