Unable to create/start graph (1 Viewer)

[muaddib]

MediaPortal Version: latest svn
Windows Version: Windows XP Pro SP2
CPU Type: Intel Mobile Celeron 1.7 GHz
Memory: 512
Motherboard: ASUS P4S800-MX SE
Video Card: Sis 661fx (64 MB)
1. TV Card: Sapphire Theatrix 550
1. TV Card Type: Analog

In the tv server setup-> manual control pressing Start TimeS I get a dialog saying 'unable to create/start graph'. An error.log is created:

27-10-2006 17:52:34 Exception :TvLibrary.TvException: Unable to connect capture-> MPEG2 demultiplexer
at TvLibrary.Implementations.Analog.TvCardAnalogBase.AddMpeg2Demultiplexer()
at TvLibrary.Implementations.Analog.TvCardAnalogBase.BuildGraph()
27-10-2006 17:52:34 Exception :Unable to connect capture-> MPEG2 demultiplexer
27-10-2006 17:52:34 site :Void AddMpeg2Demultiplexer()
27-10-2006 17:52:34 source :TVLibrary
27-10-2006 17:52:34 stacktrace: at TvLibrary.Implementations.Analog.TvCardAnalogBase.AddMpeg2Demultiplexer()
at TvLibrary.Implementations.Analog.TvCardAnalogBase.BuildGraph()
27-10-2006 17:52:34 Exception :TvLibrary.TvException: Unable to connect capture-> MPEG2 demultiplexer
at TvLibrary.Implementations.Analog.TvCardAnalogBase.BuildGraph()
at TvLibrary.Implementations.Analog.TvCardAnalog.Tune(IChannel channel)
at TvLibrary.Implementations.Analog.TvCardAnalog.TuneScan(IChannel channel)
at TvService.TVController.TuneScan(Int32 cardId, IChannel channel)
27-10-2006 17:52:34 Exception :Unable to connect capture-> MPEG2 demultiplexer
27-10-2006 17:52:34 site :Void AddMpeg2Demultiplexer()
27-10-2006 17:52:34 source :TVLibrary
27-10-2006 17:52:34 stacktrace: at TvLibrary.Implementations.Analog.TvCardAnalogBase.BuildGraph()
at TvLibrary.Implementations.Analog.TvCardAnalog.Tune(IChannel channel)
at TvLibrary.Implementations.Analog.TvCardAnalog.TuneScan(IChannel channel)
at TvService.TVController.TuneScan(Int32 cardId, IChannel channel)