Okay---When I click on certain photos in my library to go full screen so I can use the editing tools, etc, I get a black exclamation point (!) as seen through a pair of binoculars! No color photo, just this white-black-grey thing. I have not seen any explanation of this in any of the books on iPhoto (including the new one by Robin Williams and her husband, John Tollett). So..... WTF ?!?