OK, thanks for all the suggestions. Here is what I've discovered thus far: a. the past threads with related issues seem to be inconclusive (some suggest the printer driver, some the monitor, some the operating system, etc.) b. turning off transparency as well as bump maps, textures, etc. doesn't change the problem once it presents itself. c. I've gone from 16 bit to 24 bit color and the problem still exists d. I've deleted all spurious printer drivers without an improvement e. deleting the prop eliminates the error but doesn't solve the problem f. I was able to export the prop as an .obj and re-import it and it solved this render g. the best work around is merely to render in the Main Window instead of in a New Window - the problem doesn't occur then Thanks again for everyone's help!