Application crash when toggling backlinks

Testing version: Version 2.0 (10084)

What were you doing: In the view menu I toggled backlinks whilst not in a note

What feature did you use: Backlinks

What happened: If I toggle Backlinks from the view menu, whilst not in a note the app crashes

What did you expect to happen: Nothing OR the menu to be greyed out.

Thanks for reporting this bug (too).