Mason said: "...Now do you lock up on an actual render part way through or do you lock at the "add Objects" stage? " I have a sony vaio, 1 gb ram, 3ghz cpu p4, ati radeon 9800 pro graphics (graphics card shouldn't matter to poser though) , LOTS of hd space free, etc. A reasonable machine to run P5 on. Hmm,what else? XP home, new system with minimal software installs. Small Poser5 install. I just installed Freak stuff and Michael3 stuff so I could test with smaller Runtime dir. I can render if I select Poser 4 render but I hang up almost always when I try rendering with Firefly. Michael 3 alone rendered. M3 and bodysuit rendered. M3, bodysuit and hooded cape locks up. Always at "Adding Objects". I lowered bucket size to 20, no change. This is driving me crazy. :) This is my 3rd pc in two weeks. I upgraded my pc a couple weeks ago...loved P5 when it ran but a lot of lockups and strange errors. I eventually switched to a new box, same probs. Yesterday, I exchanged and upgraded to current machine and to my dismay, P5 still hangs but only with Firefly rendering. P5 runs fast everywhere else, loading initially, loading figures and textures and poses, etc. Any thoughts, suggestions? Thanks!