the progress bars across the top of c6pro show the obz files and indicate that carrara recognises them and is trying to load them, but the resulting scene is empty. in some cases, when I open a pz3 file in poser 7 and save it as cr2, c6pro can't open the cr2 file, either. not much luck with poser 4 scene files. c6pro tries to load those, but just stalls, with the progress bar at the top saying "poserfile.pz3", a solid yellow bar, and 100% at the right of the bar. however, it's worth a try decompressing everything.