TheeDuckee:

I upgraded P5 to P6 to P7 to PP to P8 to PP2010 to PP2012, and I have never had a corrupted or messed up runtime. Actually, in later versions of Poser, I just left the runtimes intact and added them as external runtimes. I hope you can afford to take the leap.

lmk

Probably edited for spelling, grammer, punctuation, or typos.