Woohoo, I got it working! And please don't laugh. (Well, please do, I know I did).
The power cord for the Firewire card had come loose. I wish I had checked that before buying a new card and a cable. Anyway, am I glad that this was such a cheap fix!
The power cord for the Firewire card had come loose. I wish I had checked that before buying a new card and a cable. Anyway, am I glad that this was such a cheap fix!