whatever format your textures are in, Poser will uncompress them to a raw data format and store it in memory. Having a texture as a JPG only reduces the size of the download, and actually reduces the quality of the texture (thats why most textures arent JPG format)

if you have practically nothing loaded into poser, and your still getting this problem, try starting the render with Task Manager open, then watch the amount of memory Poser eats up. also keep an eye on the "Commit/Charge" at the bottom of the Task Manager. if the left number gets too close (or above!!!) the second number, poser is not your only problem!

TemplarGFX
3D Hobbyist since 1996
I use poser native units

167 Car Materials for Poser