The biggest problem with ProPack is that it freezes if the CR2 (Character) you are using calls for a bump map and it's not there. The easiest solution to this problem is to load another copy of Poser without ProPack in another directory for the sole purpose of making bumps for those CR2s that ask for them. Another method is when the first call for a bump map comes is to take any bump map handy, copy it to whatever directory you're using and rename it to the name of that which is called for.

Gordon