I manage to break the Version 1.4 Bad
(as in cause a 100% hard crash if I tried to open it again).
What I was trying to do
, was add (metadata) text to a book with picture only cover.
I navigated to the cover.jpg in the Library. This is the same cover image I was trying to update.
As soon as I tried to do my first save. Bang! crash.
There were no other saves,since Calibre would crash everytime I tried to launch the PI again.
Cure: deleted the Generate cover json
You might want to trap for adding the Same image(file) that is being worked upon.