Mediaportal Crashing every night (1 Viewer)

[mforest]

TV-Server Version: Tosiba REGZA
MediaPortal Version: RC4
MediaPortal Skin: Standard Blue Wide |or| The xmas version of it
Windows Version: Fully up to date and patched XP
CPU Type: AMD64 x 2
HDD: 3 Sata and one IDE
Memory: 1.5 Gig
Motherboard: Asus
Video Card: Nvidia 8500GT
Video Card Driver: 178.24
Sound Card: Realtek HD Audio
Sound Card AC3:
Sound Card Driver:
1. TV Card: Nova T500-HD
1. TV Card Type:
1. TV Card Driver: Latest
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:

My dedicated media computer is running 24/7. Every morning when turning on the TV, mediaportal has crashed showing the immage attached. I have also attached a "crash dump". I'm sorry i this has aleady been covered, but all the threads I've looked at have had issues after "resuming" that I'm not doing.
Cheers
Martin