I bought a bunch of stuff at DAZ this morning including the milliuem girls. I get this error message when I try to do anything to them once I load them into poser.... I have WinXP, and I am using the second poser patch. For some reason the third patch doesn't seem to like to XP...

I have XP and Poser 4.3 running with no problem. May be you should uninstall P4 and reinstall it with the P4.3 patch ? (anyway, it's quite rude of Poser to throw exceptions of unknown type all around IMO).