Okay, here goes. I have the Citadels Of Troy by BVH and Dragongurl. As long as I render in the default settings it renders fine but, when I change the image size all I get is a grey screen in poser 4 renderer and a black screen in firefly renderer. And also on my task manager my cpu usage drops to zero. Its like its not doing anything. I hope this makes sense to anyone who might be able to help. Thank you