All notebooks are gone and I cannot create new ones


I have an issue with my note books. Suddenly all notes have notebook set to missing and I cannot create any new ones.

Bug report

Write the description of the issue here.
If you got a problem, please check if you got any error in the console log by selecting the menu: Developer -> Toggle Developer Tools.


  • Platform: macOS/
  • Platform version: (Sierra/10/16.04)
  • App Version: 3.x and 4

TypeError: Cannot read property ‘localeCompare’ of undefined
at t.sort (file:///Applications/
at Array.sort (native)
at e (file:///Applications/
at t.getBookTree (file:///Applications/
at file:///Applications/

Hi Cornelius,

Thank you for reporting it. That’s weird.
I need to know how to reproduce it.
What did you do before getting the problem?
Seems like you are using v3 and v4. Both don’t have compatibility.
Please don’t use v3 that will cause unexpected issue.