This is going to sound like a rather unusual question. Can you describe the mesh sizes, texture sizes, amount of transparency, amount and number of ray tracing capabilites, and complex shader settings used in the scene? There is a very simple reason for asking. I do not, myself, use Poser at this time. I'm actually here to laugh at the absurdities. However, I have a very close friend who does, and they have a fair knowledge of the inner workings of it. It is my understanding that if during the loading of or calculation for the scene, you exceed the 2GB cieling imposed by the operating systems bit structure (such as windows or macos 8, 9, and 10), then the render will not finish. Poser does a great deal more than DAZ studio does. D|S, therefore, has a much smaller memory footprint than Poser does, which means that there is more "space" available for it to work in. That, in and of itself, could actually be the reason that Poser cannot render the scene while D|S can.