new message:
Unable to open the session message bus.
System.Exception: Unable to open the session message bus. ---> System.ArgumentNullException: Argument cannot be null.
Parameter name: address
  at NDesk.DBus.Bus.Open (System.String address) [0x00000] 
  at NDesk.DBus.Bus.get_Session () [0x00000] --- End of inner exception stack trace ---

  at NDesk.DBus.Bus.get_Session () [0x00000] 
  at NDesk.DBus.BusG.Init () [0x00000] 
  at Banshee.BansheeEntry.Startup (System.String[] args) [0x00000] 
  at (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_string[] (string[])
  at Banshee.Gui.CleanRoomStartup.Startup (Banshee.Gui.StartupInvocationHandler startup, System.String[] args) [0x00000] 

Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object
  at Banshee.Base.Branding.get_ApplicationIconName () [0x00000] 
  at Banshee.Base.IconThemeUtils.SetWindowIcon (Gtk.Window window) [0x00000] 
  at Banshee.Gui.Dialogs.ExceptionDialog..ctor (System.Exception e) [0x00000] 
  at Banshee.Gui.CleanRoomStartup.Startup (Banshee.Gui.StartupInvocationHandler startup, System.String[] args) [0x00000] 
  at Banshee.BansheeEntry.Main (System.String[] args) [0x00000]




old message:
An unhandled exception was thrown: Unable to open the session message bus.

  at NDesk.DBus.Bus.get_Session () [0x00000] 
  at NDesk.DBus.BusG.Init () [0x00000] 
  at Banshee.BansheeEntry.Startup (System.String[] args) [0x00000] 
  at (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_string[] (string[])
  at Banshee.Gui.CleanRoomStartup.Startup (Banshee.Gui.StartupInvocationHandler startup, System.String[] args) [0x00000] 
.NET Version: 2.0.50727.42

Assembly Version Information:

NDesk.DBus (0.0.0.0)
Mono.Posix (2.0.0.0)
gnome-sharp (2.16.0.0)
NDesk.DBus.GLib (0.0.0.0)
gdk-sharp (2.10.0.0)
System (2.0.0.0)
atk-sharp (2.10.0.0)
glib-sharp (2.10.0.0)
gtk-sharp (2.10.0.0)
Banshee.Base (0.11.6.18037)
banshee (0.11.6.18039)
mscorlib (2.0.0.0)

Platform Information: Linux 2.6.20-ck1 x86_64 AuthenticAMD GNU/Linux

Disribution Information:

[/etc/gentoo-release]
Gentoo Base System release 1.12.9