new instalation, no video signal

Just installed tiger 10.4.6 and the latest Quicktime and FCP5.1. All work fine. Installed Blackmagic DecklinK for FCP 5, no video signal which does not surprise me. I have tried numerous downloads and re instalations for decklink...nothing, no video signal...I hate this... Please help whoever can.

Phil,

You talkin' bout no video playout from the Decklink card to an external monitor?

No, I just upgraded to FCP 5.1 - the speed test runs fine but in FCP 5.1 I do not get a video input into Log and capture. It is set up for Blackmagic 8 bit. I've de installed and installed, restarted etc..nothing...I should have waited and kept 4.5 on the computer...at least that all woked fine. There is phone number for Blackmagic support in UK..I'm in trouble man...HELP...thanks John

There is an active Decklink forum on www.creativecow.net that might be helpful.

How does the decklink input get assigned to FCP? Through a BlackMagic interface utility? So, it worked on FCP 4.5 but not on 5.1? Could it be 5.1 that's causing the problem, since the hardware was pre-existent?