Preview failed unknown error (1 Viewer)

[pela020]

TV-Server Version: 1.0
MediaPortal Version: 1.0
MediaPortal Skin: B3W
Windows Version: XP MCE SP3
CPU Type: Intel Core 2 Duo E6400
HDD:
Memory: 2 GB
Motherboard:
Video Card: Nvidia 7950 GT
Video Card Driver:
Sound Card:
Sound Card AC3:
Sound Card Driver:
1. TV Card: Hauppauge HVR-4000
1. TV Card Type: Hybrid
1. TV Card Driver: Wintv 4.6b
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:

I've just reinstalled my system and I can't get it to work. Same hardware and all. It scans chanels just fine but when I try to preview all i got is a box saying "preview failed:Unknow error": can anybody help watching my logs and see if there's anythin strange in there. I don't really understand them at all

 

[pela020]

I disabled the analog and the DVB-T. Then I deleted the "Hybrid Group". Now it works again.