Personnaly I think that DAZ should have done some beta testing before selling their product! Since Curious Labs Beta test on Poser 5, it seems that other companies are doing the same!!!!! I don't think it's a matter of cpu, ram, free space or OS: we're too many with too many different configurations, sharing the same problem for supposing that! Probably is it due to Poser 5 itself... But once again DAZ has to sell products that works!!! I sent a message to their technical service 3 or 4 days ago... still no answer for this problem... Wait and see!