RC4 EPG Chanels (1 Viewer)

[caveman]

TV-Server Version: 1.0 RC4
MediaPortal Version: 1.0 RC4
MediaPortal Skin: Blue 3
Windows Version: Vista 32 Professional
CPU Type: AMD 4850e
HDD: Samsung 320
Memory: 4GB
Motherboard: GIGABYTE MA78GPM-DS2H
Video Card: ATI Radeon 3400
Video Card Driver: Catalyst 8.9
Sound Card: Realtek Onboard
Sound Card AC3: Realtek Onboard
Sound Card Driver: 6.0.1.5694
1. TV Card: FireDTV C/CI
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: Origenae X11 v2
Cooling: synth ninja mini
Power Supply: DeZen - SCP400FL - FLPower - PSU 400Watt
Remote:
TV:
TV - HTPC Connection:

Tried to reinstall vista 32 ultra and RC 4.
When i try to update my EPG and removing the checkbox from certain channels, they light up blue.
But the checkmark is still shown.
However when i save the settings, abd go back into the mapping, the checkmark is removed.

Also the preview of my channels is not working all the time..