Ikendall...I think you hit on one of the problems.  To save time I loaded the whole boatload of morphs ++, creature, muscle, RDNA ultimate.   I plan to go to Vista 64 and then to Poser Pro the next time they have a sale.  Until then I'll just do fewer renders.   The renders work the first couple of times.  If anyone hears of a sale on Poser Pro, let me know.
Thanks