cody@cody-desktop:~/Downloads/dbus-sharp-0.5/tools$ ./dbus-monitor

Unhandled Exception: System.Exception: Unable to open the session message bus. ---> System.ArgumentNullException: Argument cannot be null.
Parameter name: returnType
  at System.Reflection.Emit.DynamicMethod..ctor (System.String name, MethodAttributes attributes, CallingConventions callingConvention, System.Type returnType, System.Type[] parameterTypes, System.Reflection.Module m, Boolean skipVisibility) [0x000ff] in /build/buildd/mono-1.1.17.1/mcs/class/corlib/System.Reflection.Emit/DynamicMethod.cs:107 
  at System.Reflection.Emit.DynamicMethod..ctor (System.String name, MethodAttributes attributes, CallingConventions callingConvention, System.Type returnType, System.Type[] parameterTypes, System.Type owner, Boolean skipVisibility) [0x00000] in /build/buildd/mono-1.1.17.1/mcs/class/corlib/System.Reflection.Emit/DynamicMethod.cs:80 
  at System.Reflection.Emit.DynamicMethod..ctor (System.String name, System.Type returnType, System.Type[] parameterTypes, System.Type owner, Boolean skipVisibility) [0x00000] in /build/buildd/mono-1.1.17.1/mcs/class/corlib/System.Reflection.Emit/DynamicMethod.cs:77 
  at System.Reflection.Emit.DynamicMethod..ctor (System.String name, System.Type returnType, System.Type[] parameterTypes, System.Type owner) [0x00000] in /build/buildd/mono-1.1.17.1/mcs/class/corlib/System.Reflection.Emit/DynamicMethod.cs:71 
  at NDesk.DBus.TypeImplementer.GetWriteMethod (System.Type t) [0x00000] 
  at NDesk.DBus.MessageWriter.WriteValueType (System.Object val, System.Type type) [0x00000] 
  at NDesk.DBus.Message.GetHeaderData () [0x00000] 
  at NDesk.DBus.Connection.WriteMessage (NDesk.DBus.Message msg) [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.SendMethodCall (System.String iface, System.String member, System.String inSigStr, NDesk.DBus.MessageWriter writer, System.Type retType, System.Exception exception) [0x00000] 
  at IBusProxy.Hello () [0x00000] 
  at NDesk.DBus.Bus.Register () [0x00000] 
  at NDesk.DBus.Bus..ctor (System.String address) [0x00000] 
  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 Monitor.Main (System.String[] args) [0x00074] in /home/cody/Downloads/dbus-sharp-0.5/tools/Monitor.cs:33 
cody@cody-desktop:~/Downloads/dbus-sharp-0.5/tools$