Quartz will not see the Active Silicon cards, as there are no quicktime-driver, only native Catalyst-driver

I got it work with an aja LHi Card, we used that for our custom Quartz-Composer Videomachine on "Die Fantastischen Vier"

System was running in 32-bit mode, 10.6.8, also Quartz needs to run in 32-bit
Maybe thats your problem