“NoteBook Says Someone Else is Using My Notebook?”
 
“I’m getting the message that my Notebook appears to be open on another computer, but I’m the only person with access to it.  What’s happening?”
 


When you open a Notebook, NoteBook saves a small “lock” file inside of it. If someone else opens that Notebook — if it lives on a network disk, for example — their copy of NoteBook sees the lock and tells them the Notebook is already open. It’s important that NoteBook flag two people opening the same Notebook because the Notebook can become corrupted as each person saves their changes.  When you close the Notebook, NoteBook removes the lock file.
 
If NoteBook or your computer crashes while a Notebook is open, the lock file will still exist the next time you open that Notebook.  NoteBook sees the lock file and thinks the Notebook is open on some other computer. Because it’s not really open anywhere else, it’s safe for you to choose “Open to Make Changes.”