mythtv - setup

[Scyth]

Hi...

Another problem popped up during mythtv-setup: When I leave the basic-setup screen I get the following message

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Card 8 (Type television) will start on channel 1, which does not exist.
Do you want to solve that problem?

Well - I'm from Austria so I translated it and  I hope that you know to what kind of message I relate to.

So far I have downloaded epg via a grabber, filled it via mythfilldatabase (and I can see the program in the setup) and I distributed numbers among the channels as well as MHZ. So... I wonder where the problem is...