For me this problem also still occurs, giving the traceback on the terminal from which I have started system-config-printer and an incomplete list of detected network printers. I am using the -0ubuntu6 version which has Tim's patch applied.
-- system-config-printer.py crashed with AttributeError in send_reply() https://bugs.launchpad.net/bugs/520466 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs