I have an animation that I am unable to render as well. It uses DAZ's Victoria 3, a weight bench, weights, clothing, and hair. V3's loaded CR2 is very light, since it only contains the morphs I spawned for the character. I am using the Firefly render, with reflective nodes on the weights and weight bench. I have rendered it on my home system (Win2K SR3) and it stops somewhere between frame 19-21. It does not matter if I am trying to create an AVI or images during the render. I have defragged, disabled Norton Anti-virus, and made sure only essential processes were running. Same result. I have also rendered it on a well maintained NT 4.0 workstation -- my computer at work. I got the same result. My work computer is going to be upgraded to XP in a couple of weeks, and I will run the animation under XP to see what happens. I will be suprised if it does work, because IMO, there is a memory leak. I think the Firefly render has a very elusive memory leak that only rears it head under certain conditons. The only way to trace something like that is to dump a log of every memory and pointer allocation and deallocation. If the allocations outnumber the deallocations, then you have a memory leak. And I also know it is not as simple as it sounds, especially with a rendering engine. To be honest, I am also going to run the same animation under DAZ|Studio when it is released. If it works, then then I have a new tool, and they have a customer.