Go to the notebook and click on it. Then, click on the gear icon to the right of the notebook name. A window will open allowing you to mark the notebook as local or synchronized and you can change the notebook name. I'm the Mac desktop version. Best to all ...
I upgraded my iMac on Mountain Lion to 6.0.2 and it continually crashes on startup. I removed and reinstalled the program and have the same problem. Should have waited:-(