Since you're on 64bit OS, you should use Poser Pro 2010. It's stable, it's rendering much faster than P7 (more than 100%) and a bit faster than P8 (10-30%). Question is: why do you even consider a 32 bit P8 if you can get a 64 bit Poser Pro 2010. Also read the forum, the question was already answered a few times before with more detailed information.