H.264 Pro Recorder - Video Preview issue

Hi,
in order to test the H264 Pro Recorder i connected a media PLayer via HDMI to the Recorder.
I am able to capture videos, but the video preview winow of the media express interface doesnt show the video content. It stays plain black. I am able to playback the captured video via vlc. But it is not playable with the media express playback function.
Any ideas how to solve the problem?
http://s7.directupload.net/file/d/3039/jwipycbc_jpg.htm

all best lt1

You did not mention what kind of computer you are using!?
I have the same "feature" with my laptop, which has a 'shared memory' display adapter.
If you see this on display card with dedicated display memory, you may have to change the video overlay settings to get preview working properly.

Hi Esa,
I used a notebook with win xp sp3. In the meantime i installed Desktop Video 9.6.7 on a win7 sp1 notebook and the video preview problem is solved.
Of course another problem occured (audio video async when recording longer than about 90 minutes with the pro recorder).
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http://forum.blackmagicdesign.com/viewtopic.php?f=18&t=1068
all best
c