Can you please try to get a backtrace, as described on https://wiki.ubuntu.com/DebuggingProgramCrash? (The topmost instructions are for edgy, while the 'old notes' apply to dapper).
** Changed in: gnome-cups-manager (Ubuntu) Status: Unconfirmed => Needs Info -- The command gnome-cups-add crushes https://launchpad.net/bugs/64750 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs