Have you tried the demo? Using 32 bit, the demo didn't work for me on DXi synths (tts-1) but I took a chance and the full version work well. Just don't expect more than 1 instance. To me, if it works with bitbridge in the demo, you should be fine. Try multiple instances too, to see if it work for you, and post your findings.
I agree 7Aliens haven't been too responsive thus far, however I've found them posting to other forums:
http://www.kvraudio.com/forum/viewtopic.php?p=3709025 In relation, he claims to 'use at your own risk' on Win 64.
To the group, is it worth it for all of us to opening up a trouble ticket to Cakewalk on this issue? I just have a feeling that there would be fingerpointing back and forth. Of course Dim Pro, Rapture and others all work with multiple instances because of either partnerships or extensive testing. Would be cool if we can get them to talk to each other.
It also doesn't make sense to me that Catanya needs an audio track. I see that there's options in the VSTi to turn it off, but didn't work for me. Can only get one instance to work thus far.
Catanya is a very cool plugin, even if only one instance. The patterns alone are quite amazing, and the interface is quite nice. After seeing the 'working' Sonar Arp and being stuck with presets, I had to have it. I felt like I was writing a Billy Joel track with some of the ballad piano presets. It's a nice tool, and is quite exciting to work with.
At worst, you can bounce to midi clips and move forward with other tracks. I'd rather have the multiple instances though. That was a selling point for me.
Just strange that we can run multiple copies of Dim Pro, Rapture, etc. but not of Catanya, which seems to be less intensive, as it generates midi. I bet it's some audio issue that causes the hang.