I'm running SolidWorks x64, SP4.0 with a Premium license.  When I add in PhotoWorks, the menu bar changes so I can access the PhotoWorks drop-down menu.  However, when I pull down the menu and select Scene, nothing happens.  When I press escape, I get the following error message:  "The current operation cannot be interrupted or the document is not accessible at this time."  I've tried the same thing with a Professional license with the same result.

I've verified that I'm using an approved graphics driver for my card/system.  Any thoughts?