I just posted a reply in this thread:
http://duc.avid.com/showthread.php?t...ht=audio+clock
It seems to me, each of us is having a slightly different variation of the problem, the main common denominator being that same message. For me, what works is to close the session and then open up an old one that was created on an earlier version of ProTools (I'm thinking 8 or earlier, if you've got it). It seems to work then. And then I close out of that session and go back to the session I want.
But for me this happens when I first open up ProTools and open up my first session of the day (if it's a recently created session). After I do my workaround, I don't see it again the rest of the day, even if I open up a bunch more sessions.
As I mentioned in the other thread, it started happening to me after I upgraded my Soundtoys bundle to ver. 4. You didn't happen to recently do that, did you?