Hi, This is proberly a known issue with SR4 and the firefly engine on production, that it won't render on my P4 2.4ghz 1geg ram desktop- gets half way through and stops(this is with a 8meg file. But if I reinstall poser without SP4 it works fine. Is this what other people find when rendering large files? My note book P4 3.4ghz 1 geg ram can do it but it slows right down with SP4 with the 8meg file.