Ooh, another thing. Obviously with the overall ambient colour set to black, no ambient materials will glow. This is a problem if you want glowey objects. The fix is to use simple volume materials. And, not only will the objects glow like a normal ambient material - they will actually cast light on the surroundings! When I say simple volume materials, I mean it. Use flat shading only. Basic shading or full shading will freeze/crash Bryce. G'night!