media_control.py crashed with DBusException in call_blocking()

after click to start banshee

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: awn-applets-python-core 0.4.0+bzr1372-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-19.28-generic 2.6.35.3
Uname: Linux 2.6.35-19-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Fri Sep 3 15:23:18 2010
ExecutablePath: /usr/share/avant-window-navigator/applets/media-control/media_control.py
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
InterpreterPath: /usr/bin/python2.6
PackageArchitecture: all
ProcCmdline: python /usr/share/avant-window-navigator/applets/media-control/media_control.py --uid=1283011535 --window=29360175 --panel-id=1
ProcEnviron:
 LANG=ru_UA.utf8
 SHELL=/bin/bash
PythonArgs: ['/usr/share/avant-window-navigator/applets/media-control/media_control.py', '--uid=1283011535', '--window=29360175', '--panel-id=1']
SourcePackage: awn-extras-applets
Title: media_control.py crashed with DBusException in call_blocking()
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

Traceback (most recent call last):
  File "/usr/share/avant-window-navigator/applets/media-control/media_control.py", line 364, in start_player_pressed
    mediaplayers.__dict__[args]().start()
  File "/usr/lib/pymodules/python2.6/awn/extras/awnmediaplayers.py", line 123, in start
    obj = bus.get_object(self.dbus_base_name, object_path)
  File "/usr/lib/pymodules/python2.6/dbus/bus.py", line 244, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 241, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/pymodules/python2.6/dbus/bus.py", line 183, in activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/pymodules/python2.6/dbus/bus.py", line 281, in start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: Process /usr/bin/banshee-1 exited with status 1