I have Zbrush 4 on WinXP x32 SP3, 2gb ram, P4 w/HT 2.8Ghz, Nvidia MX400, the new adaptive skin feature for Zspheres does not work on this machine instead it automatically models in Classic mode, i can turn classic mode off or on but it still models in classic mode even though its set to off. I have a newer machine. Win7 x64, quadcore, 6gb ram, nvidia geforce 9100, and adaptive skin works fine. My guess is that the older machine needs a dependent file/driver. I have the latest updates of nvidia for this but no go. any ideas?:rolleyes: