Also just watching to see if there's any pattern or if anyone comes up with anything new. I'm pretty much in the same boat as Pinto. XP, 1Gb RAM, 1.5Gb pagefile, 86Gb free disk space on C:, with with Poser on a second drive with 90Gb free. Defragged & done all of the above, and still get stuck with the Insufficent Memory to Render blah blah message occassionally. Only thing I've observed, and could be coincidental, but seems to occur only when I've got another CD in the drive. I've just been rebooting with minimal startup apps (no Norton, no ZoneAlarm) until it clears up.