I use the original IO on my Mac Pro 10.5.5 with FCP 6.0.5 and it’s a little finicky at times, but it’s been good to me. The only thing I’ve noticed is occasionally signal to my broadcast monitor doesn’t get updated. When that happens, if I disable external monitor and then enable it again (cmd-f12) it comes back fine.
The only other issue I’ve had with it, is that for the life of me I cannot get it to accept my xlr mic to be used for the VO tool (even after disabling external monitoring) but I only record scratch audio anyway, so I’ve been cheating by running a line out of my mixer into the Mac Pro line in.
When you installed the software, did you install both the digital and analog packages? Otherwise, like Gary mention, I would recommend calling AJA, their tech support is top notch.
Richard Sanchez
North Hollywood, CA
“We are the facilitators of our own creative evolution.” – Bill Hicks