If the scene loads without errors and the error appears only when rendering, the problem may be that a bump or specular or displacement map cannot be found.

The question of which texture is missing can be done in two ways - either by going into the material room and check each material of an attached texture (bump, disp or spec) is empty or is show as completely white - or by turning on the texture search log (WRITE_FILE_SEARCH_LOG 1 in poser.ini) and checking the log for the name of the file when the error occurs. Logfile is located in users//Appdata/Local/Temp/Poser Pro/9. Be sure to have poser NOT runnning when you edit the poser.ini

Checking in the material room is the easiest if it is a small scene, but if it happens more often, turning on the logfile is more convenient.

Possible culprits are a non-present texture, an incompatible texture (shows as white), or an empty image node which is connected