Shadowblade, I am not sure I get this - when you say 256 folders, do you mean in a section like "Poses" or do you mean in the entire runtime folder? I have about 600 folders in my runtime folder... Regarding the speed issue, I think this problem actually started for me when I got the pro Pack - Poser 4 didn't have this problem, and Poser 5 doesn't either. I use P4 Pro vs. P5 because of the external 3D plugins. The only thing I can think of that would slow down the previewing of my Poser 4 Libraries is the PNG thing (instead of RSR's), since that is what has changed durring Previews. Of course, I know nothing about how it is programmed, so my assumption is based on complete guesswork.