Screenshot ability broken

aleaic

Ever since the CE event patch, about two weeks ago, I've been unable to use the screenshot ability, utterly. All I get on making screenshot attempts, either with the keyboard, or through chat line commands, are big, fat black 'pictures', essentially nothing being taken at all now.

Any clues or help, that could assist in cleaning this up? Some screenshots are for assisting my fleet in internal projects, and whatnot here.