I had a go at my cat just there. Running now in 32bit and also with catv4.4 (m329) running just fine. Decklink card is work beautifully with one or two exceptions:

These inputs work fine:
720p 50
720p 60
1080i 59.94
1080p 24
1080p 23.976

These do not:
720p 59.94
1080i 50

Also, since I did all this, now my LFG4 card will not work. Nor will it come up under inputs. What it does say however is Phoenix, which I don't have. If I click on any of the "phoenix" inputs it crashes and sometimes crashes the computer too. Now I'm really confused? The only thing I did was re-arrange the PCIe cards. Could that be it?
Aside from that its slick