Running graphical software update, fc13. Attached are screenshots, which appear in sequence.
The first seems to be asking if I trust the source, Adobe. (The Help for this window says I can go to the adobe website to confirm details of the signing key, which I will do if there is not a simpler fix.) If I respond in affirmative to the first window I get the failure window, second shot, with traceback.
Any help would be appreciated!