No matter what text generator I use in Final Cut Pro 7, FCP will crash with a message that it was due to Final Cut Pro trying to use a Blackmagic codec. though this doesn't happen with a new project, only on my timeline so far using DVCPRO HD 720p60. It doesn't matter whether I have external video on or off.
I am using the latest of FCP 7, Snow Leopard, and a Multibridge Pro 2
I've just experienced the same thing although I was working in DVCPro HD 720 30P. I'm using software version 7.9. There seems to be a 7.9.6 out there but there's an error every time I try to download it.
There's also a driver called BlackMagic Desktop Video Macintosh 8. I have no clue if that will work for me or not as I'm using an older card. (Decklink Extreme HD)
Man, I wish they had a little better information on their website.