From your question, it's hard to tell how you're inserting Catana... as a soft synth, or as an effect? Can you see it as a soft synth?
It needs to be a soft synth, and follow what djjhart mentions above.
I really like it, as well, but depending on what I'm doing, it has shown to be a little flakey and picky. My Sonar trouble ticket for multiple instances has been flagged as "under investigation", but not sure what that means.