If I have a really Long render time image (like with lots of glass) I will usually do a rough render of the whole thing, save the file and then come in and do a plop-render of a selected area. When that is done I will save the image (not necessarily the Bryce file) and then go on to do a plop-render of another portion. This way I can do it in stages (so my computer isn't completely tied up and unavailable for other uses if I need it) and if something should freeze up during one of the partial renders I can go back and load in the last saved one and continue without losing ALL that render time. Sometimes Bryce hangs on me. Does that happen to anyone else?