It really does look like your channels havnt been mapped correctly.
Maybe you've got some crap hanging around in your database from previous attempts. Try deleting your gbpvr.mdb file. It'll automatically create a new one. Go into the config app and try creating the capture source again.
If its still not working after that then post a screenshot of your 'map digital channels to EPG channels' screen.
It took me a couple of attempts but I've managed to successfully record a couple of programs. Thanks for your help sub. Great app, great forum.
Cheers
Martin