I just got CSS a few weeks ago and have been having the hanging notes problem in Logic. And, I mean, really bad. I tried setting CC64 to 0 and that didn't work for me. I am using CC58 for my articulation maps, so that's still something to look at. But, like others have mentioned, I have problems with the Infinite series having stuck notes and they don't use articulations at all. I finally decided to turn off note chasing, just to see if that had anything to do with the problem and I haven't had a stuck note since. Hmm. I don't really like having that off, but I'm curious about why Logic's note chasing is messing up some of these Kontakt libraries and if there might be something that Apple or NI could do to fix this. I suspect that too much note data is being sent too quickly and it's not being processed correctly? But, that's just a guess...