Bug 699760

abrt version: 2.0.1
executable: /usr/share/system-config-printer/system-config-printer.py
cmdline: /usr/bin/python /usr/share/system-config-printer/system-config-printer.py
component: system-config-printer
package: system-config-printer-1.3.2-2.fc15
kernel: 2.6.38.3-18.fc15.x86_64
reason: connection.py:566:call_async:ValueError: Unable to guess signature from an empty list
architecture: x86_64
uid: 500
username: wetab
os_release: Fedora release 15 (Lovelock)
time: 1303828259

event_log
-----
2011-04-26-16:43:40> Logging into Bugzilla at https://bugzilla.redhat.com
2011-04-26-16:43:42  Can't login. Server said: RPC failed at server.  The username or password you entered is not valid.
2011-04-26-16:43:42* (exited with 1)
2011-04-26-16:53:57> Logging into Bugzilla at https://bugzilla.redhat.com
2011-04-26-16:53:59  Can't login. Server said: RPC failed at server.  The username or password you entered is not valid.
2011-04-26-16:53:59* (exited with 1)

backtrace
-----
connection.py:566:call_async:ValueError: Unable to guess signature from an empty list

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/dbus/connection.py", line 589, in msg_reply_handler
    *message.get_args_list()))
  File "/usr/lib/python2.7/site-packages/dbus/proxies.py", line 406, in _introspect_error_handler
    self._introspect_execute_queue()
  File "/usr/lib/python2.7/site-packages/dbus/proxies.py", line 378, in _introspect_execute_queue
    proxy_method(*args, **keywords)
  File "/usr/lib/python2.7/site-packages/dbus/proxies.py", line 132, in __call__
    **keywords)
  File "/usr/lib/python2.7/site-packages/dbus/connection.py", line 566, in call_async
    message.append(signature=signature, *args)
ValueError: Unable to guess signature from an empty list

Local variables in innermost frame:
bus_name: dbus.UTF8String(':1.52')
byte_arrays: False
self: <dbus._dbus.SystemBus (system) at 0x2b09dd0>
args: (0, 0, ['dnssd', 'snmp', 'bluetooth'], [])
require_main_loop: True
utf8_strings: False
reply_handler: <bound method _PK1AsyncMethodCall._pk_reply_handler of <asyncpk1._PK1AsyncMethodCall instance at 0x2e2d830>>
error_handler: <bound method _PK1AsyncMethodCall._pk_error_handler of <asyncpk1._PK1AsyncMethodCall instance at 0x2e2d830>>
dbus_interface: 'org.opensuse.CupsPkHelper.Mechanism'
object_path: '/'
timeout: 3600
signature: None
e: ValueError('Unable to guess signature from an empty list',)
message: <dbus.lowlevel.MethodCallMessage object at 0x2ab0708>
get_args_opts: {'byte_arrays': False, 'utf8_strings': False}
method: 'DevicesGet'