Powerscheduler client plugin not starting (1 Viewer)

[spitjo]

MediaPortal Version: 1.0.2
MediaPortal Skin: BlackGlass 2.2
Windows Version: Windows XP Professional SP3
CPU Type: INTEL Q6600 2,4 Ghz Quad-Core
HDD: System = Maxtor 80Gb Sata II / Timeshift = Seagate 160Gb Sata II / Storage = Seagate 500Gb Sata II
Memory: 2 x 1Gb Corsair DDR2 800 Mhz / 1Gb Kingmax DDR2 800 Mhz
Motherboard: Asus P5B
Video Card: Asus GeForce 8800GT 512Mb DDR3
Video Card Driver:
Sound Card:
Sound Card AC3:
Sound Card Driver:
1. TV Card: Technotrend s2 1600
1. TV Card Type: Dvb-S2
1. TV Card Driver: 5.0.1.8
2. TV Card: Terratec HT Pci
2. TV Card Type: Hybrid (Analog + DVB-T)
2. TV Card Driver: 1.3.3.5
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: Nvidia PureVideo
MPEG2 Audio Codec: Nvidia PureVideo
h.264 Video Codec: Cyberlink PDVD9
Satelite/CableTV Provider: Hotbird 13°E
HTPC Case: Cooler Master Elite 330
Cooling: Cooler Master & Titan Fans
Power Supply: Recom Real Power 550W
Remote: Microsoft MCE
TV: Samsung 27" Lcd Hd Ready - LE27S71B
TV - HTPC Connection: Hdmi - DVI-D


I reinstalled 1.0.2 due to 1.1 instability
I figured out that powerscheduler client plugin is not starting so my htpc is not suspending
In mp error.log i found this

2010-03-06 17.55.37.546875 [ERROR][MPMain]: Unable to start plugin:MediaPortal.Plugins.Process.PowerSchedulerClientPlugin exception:System.Net.WebException: Impossibile effettuare la connessione al server remoto. ---> System.Net.Sockets.SocketException: Impossibile stabilire la connessione. Rifiuto persistente del computer di desti****one 127.0.0.1:31457
   in System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   in System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)
   in System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
   --- Fine dell'analisi dello stack dell'eccezione interna ---

Server stack trace: 
   in System.Net.HttpWebRequest.GetRequestStream()
   in System.Runtime.Remoting.Channels.Http.HttpClientTransportSink.ProcessAndSend(IMessage msg, ITransportHeaders headers, Stream inputStream)
   in System.Runtime.Remoting.Channels.Http.HttpClientTransportSink.ProcessMessage(IMessage msg, ITransportHeaders requestHeaders, Stream requestStream, ITransportHeaders& responseHeaders, Stream& responseStream)
   in System.Runtime.Remoting.Channels.SoapClientFormatterSink.SyncProcessMessage(IMessage msg)

Exception rethrown at [0]: 
   in System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   in System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   in TvEngine.PowerScheduler.Interfaces.IPowerController.RegisterRemote(String standbyHandlerURI, String wakeupHandlerURI)
   in MediaPortal.Plugins.Process.PowerScheduler.OnResume()
   in MediaPortal.Plugins.Process.PowerScheduler.Start()
   in MediaPortal.Plugins.Process.PowerSchedulerClientPlugin.Start()
   in MediaPortal.GUI.Library.PluginManager.Start()

It seems that port 31457 on localhost is not accessible. this is very strange since i have no firewall installed (the windows fw is disabled)
I found very old posts reporting same problem but without a solution
Plz help