Mystic38
I don't believe an x2 re-install was necessary, but glad its working..
 
if this occurs again, here is my note from an older thread in the dungeons..
 
Go to C:Users\<username>\AppData\Roaming\Cakewalk\Sonar X2 Producer folder with Windows Explorer and delete (or rename if you're the cautious type) ctrlsurface.dat and ttseq.ini.
 
this deletes all record of the control surface connections (deleting from within sonar does not) and allows a fresh start.. this problem occurred for me a couple of times using ac-7 and touchdaw on x1
 
regards,