For me it works. Pro 2012, Reality 3 and Lux, all on an Athlon 64X2 running WinXP Pro 32 bits. Not a miracle of speed, but stable and good enough to see where results it goes as far as light and tone are concerned. Then if it looks good I close lux, and transfer to another (Unix) machine on which I have not Poser/reality of course, but 64 bit Lux and much much more capacity.