Your log complains about missing filters/codecs
(if you haven't done it allready)
1. Run hcwclear.exe (that's the wierd part)
Just tested CD1.2b (and CD1.2a) with my HVR900H: DVB-T/MPEG2 works.
You can't see DVB-T/MPEG4 in WinTV7 if you havent got the "HDTV"-codec (see posts in this part of the forum)
Hope it helpes