Running Poser 2010 on Win7 32bit

The problem doesn't appear to be runtimes or where they're located, the program hangs on ending the render cycle.  I've tried rendering a blank scene ... it renders (the progression bar is at 100%), but then doesn't seem to exit the render cycle.

If I have a V4 character loaded, and render - the render completes but, the render progression bar shows only half done - and it never leaves this state, and ultimately I have to close the program.  Anyone else experiencing this and have some idea how to fix it?  This only started happening in the last week for some inexplicable reason.