Ed: Thanks for the info, but I have 866 with 512MEGS and two 40 gig hard drives with over 60% currently free. Defrag is run every night. It's a PC in case you hadn't guessed by the specs. It renders AVI movies just fine. Never once have had a problem there, even with complex setups. It is only when I try to do a TIFF sequence. IF $&!$$* Curious Labs would just have included QUICKTIME support for Poser this wouldn't even be necessary. I could just ouput it with an Alpha channel with no compression and be done with it. (Well except for the fact that they totally screwed up and inversed the Alpha channel.) -Tim