P.S. I should also add that I can export as a JPG, provided that I don't click on the "Save as type" drop-down. It seems that all hell breaks loose once I click that drop-down though. I get the error message, and when I cancel out of it, I find that all of the main menu options have become disabled. Furthermore, even the "x" in the top right-hand corner of the Poser window is disabled so I have to crash it via the Task Manager. (Can someone remind me how to report a Poser bug to e-Frontier ?)