Sorry I misread, you did say that it works fine under Poser 7.  I have not had any problems with Poser Pro myself, and the png files are installed in my runtime.  

Poser Pro doesn't use the rsr files anymore, if you can find the png files that matches the name of the cr2 file then that is all you need.  If you still have the poser 7 install you could just copy over the png files from there.

Shawn McCarthy
www.defyallchallenges.com