Missed this thread originally or I would have jumped in....I think I got on the original discussion at 8.5.
The youtube video is the smoking gun! Great job!!
Just got 64 bit Catanya and it is the same thing you are all seeing 100%.
Except when I use 2 simultaneous instances of Catanya it totally crashes Sonar. Crashes so hard you have to restart the PC to get the stuck audio to stop. Been doing this since 8.5 too. Although I will say in the past it would at least play for a little while, as long as you did not touch a key or the mouse. Now just enabling midi out on the second instance of catanya crashes sonar.
I also have experimented with another DAW (rhymes with creeper) and it works great.
I love Sonar X2 in all other ways, but this is very frustrating as I use a lot of Vsti's now and you have to be so careful. At one time Sonar was the chosen DAW for midi, but maybe not so much anymore ?
JR