Also I have the same problem.
DVB-S2 card + Cyberlink H.264 + AnyDVD-HD.
AstraHD_Promo MPEG2 is OK but AstraHD_Promo H.264 don't play (black screen).
DVBViewer3.6 play H.264 channel.
Also with BlurayDisk it doesn't work. It show error "Insert Disk".
(PowerDVD7.3ultra play BD correctly)...
I have an Hauppauge HVR-1100 TV Tuner Hybrid (DVB-T and analog).
With MP 1.3, Wizard found DVB-T and autotune search and found the channels but after, when I lounch MP, all achannels are black.
With MP 2.0 RC1, Wizard found DVB-T but autotune generate an Error (no graph) and don't search...
My HW: Pentium 4D, XP MCE 2005, SkyStar 2, Hauppauge HVR1100, MPEG2 Codec...
MP Setup tune and found DVB-S channel, DVB-T channel and Analogue channel, but in MediaPortal TV all is black.
Can you help me?