System.ApplicationException: F-Spot cannot find the Dbus session bus.  Make sure dbus is configured properly or start a new session for f-spot using "dbus-launch f-spot" ---> System.Exception: Unable to open the system message bus. ---> System.NullReferenceException: Object reference not set to an instance of an object
  at NDesk.DBus.Signature.TypeToDType (System.Type type) [0x00000]
  at NDesk.DBus.Signature.TypeToDType (System.Type type) [0x00000]
  at NDesk.DBus.MessageWriter.Write (System.Type type, System.Object val) [0x00000]
  at NDesk.DBus.MessageWriter.WriteStruct (System.Type type, System.Object val) [0x00000]
  at NDesk.DBus.Message.WriteHeader () [0x00000]
  at NDesk.DBus.Connection.Send (NDesk.DBus.Message msg) [0x00000]
  at NDesk.DBus.Connection.SendWithReply (NDesk.DBus.Message msg) [0x00000]
  at NDesk.DBus.Connection.SendWithReplyAndBlock (NDesk.DBus.Message msg) [0x00000]
  at NDesk.DBus.BusObject.Invoke (System.Reflection.MethodBase methodBase, System.String methodName, System.Object[] inArgs, System.Object[]& outArgs, System.Object& retVal, System.Exception& exception) [0x00000]
  at NDesk.DBus.DProxy.Invoke (IMessage message) [0x00000]
  at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke (System.Runtime.Remoting.Proxies.RealProxy rp, IMessage msg, System.Exception& exc, System.Object[]& out_args) [0x0009a] in /home/cvs/mcs/class/corlib/System.Runtime.Remoting.Proxies/RealProxy.cs:181 --- End of inner exception stack trace ---

  at NDesk.DBus.Bus.get_System () [0x00000]
  at NDesk.DBus.BusG.Init () [0x00000]
  at FSpot.Driver.Main (System.String[] args) [0x00000] --- End of inner exception stack trace ---

  at FSpot.Driver.Main (System.String[] args) [0x00000]