Don't know what to say. The only other time I recall this error (which I had forgotten till it was the only thing google produced), it was not sorted out.
http://forums.adobe.com/message/4151944
I just tried to create it by blatantly changing a menu psd with encore open, closed etc. Could not produce the warning.
I am windows 7, CS6 (regular install, not cloud). I don't think any of that should matter.
It's odd enough that it would move an uninstall/reinstall higher on my list.