Hello Noel.
Sorry for delay in this case. I just find your replay now. I belive that's same problem, because when i change input on audio track from stereo to mono, like "JL" writed, everithing working like a sharm. With no problem. It's just strange that it's happend first time after update Cakewalk to latest beta version, never before. I am at work now, so I can't use your fix now. When i'll come back home to studio, I'll use your fix and then i'll give you feedback, if it working. But thank you anyway. Good job like ussually.
Best regards
Miki