before i left for work i tried prs500 df, and it worked, so i'm pretty confused about why the gui can't do the same thing. when i get home i'll try adding the print path.
i also sometimes get a seg fault, though that may be from some of the things i was trying to get it working
also after running the gui, the command line app doesn't work unless i disconnect and reconnect the reader, though that's probably because i haven't had a chance to let the gui end gracefully yet.