From a reply to same question yesterda - Chris Cox - "It's not an error, just an informative message that means exactly what it says."
Chances are your selection is feathered more than the size of the area you're selecting. Look at the Feather box in the options bar with the selection tool current, and set it to 0 if you're trying to crop using a selection.
Thanks, anyway, Chris, but don't go into tech support.
Tha answer was that I lower the number to 0 in my Feather Options box.
Thanks Noel! It did the trick!