TV screen stays black after new install (1 Viewer)

[holeione]

MediaPortal Version: 1.1.3.0
MediaPortal Skin: blue3wide
Windows Version: XP SP3
CPU Type:
HDD:
Memory: 4 GB
Video Card: NVidea
Video Card Driver:
Sound Card:
Sound Card AC3:
Sound Card Driver:
1. TV Card: Hauppauge WinTV PVR PCI
1. TV Card Type:
1. TV Card Driver:
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
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:
MPEG2 Audio Codec:
h.264 Video Codec:
Satelite/CableTV Provider:
HTPC Case:
Cooling:
Power Supply:
Remote:
TV:
TV - HTPC Connection:

When I start MP and select TV, the screen stays black. Channels are not loaded whick leads me to believe they are not correctly loaded. The messages in the log file suggest the same?

I have no idea to to fix this.
Help?

The first error is already thrown when MP is started (withoutr selecting TV)

2011-03-05 23:19:32.339735 [ERROR][MPMain(1)]: TVHome: Error in Reload
2011-03-05 23:19:32.355360 [ERROR][MPMain(1)]: Exception ystem.NullReferenceException: Object reference not set to an instance of an object.
at TvPlugin.ChannelNavigator.ReLoad()
2011-03-05 23:19:32.355360 [ERROR][MPMain(1)]: Exception :Object reference not set to an instance of an object.
2011-03-05 23:19:32.355360 [ERROR][MPMain(1)]: site :Void ReLoad()
2011-03-05 23:19:32.355360 [ERROR][MPMain(1)]: source :TvPlugin
2011-03-05 23:19:32.355360 [ERROR][MPMain(1)]: stacktrace: at TvPlugin.ChannelNavigator.ReLoad()

I do not know if it is important but the database is on a different system than the server and the client.
The database is filled. Channels are present.