There are actually two different error messages. If it is the "Insufficient Disk Space to Render at Current Resolution" message, you can adjust your memory -- there are directions in the Poser 4 Top Ten FAQs at Curious Labs. The message for missing objs and corrupt rsrs is indeed the "You are out of memory" message. I just point this out because a lot of people are casual in their usage of disk space and memory, and the two messages indicate quite different problems :-)