Originally Posted by alansplace
C:/Users/alan/ (gives an error that no library exists)
C:/Users/alan/eBooks/Calibre Library (x) (does nothing)
C:/Users/alan/eBooks/Calibre Library (2) (does nothing)
the first one never existed, the other two were deleted but none of them ever go away from being choices in the window.
If you're feeling brave and you can use a text-editor, you can edit this "history" in your Calibre config directory.
[Preferences] - [Advanced] - Open Calibre config directory
The relevant file is history.plist
If you're careful you can remove the entries you don't want.
*** Backup the original first ***
P.S. I hope I'm not speaking out of turn.