And as yet, I've been unable to find A SINGLE PERSON who reports success with animation rendering using Firefly. * sighs and raises hand * I've rendered Firefly animations over 1100 frames in length, at 640x480 resolution, with raytraced shadows and refractive effects, and don't ask me why it works because I have no idea. I often use the P4 renderer if the animation doesn't take advantage of P5's advanced features, but I haven't had any serious problems with Firefly itself.