[markcrew]

I've been using calibre on Windows for a few years to manage a 500+ book library for my Kindle. Today I was editing the tweak to change the initial sort order displayed and I apparently specified an invalid sort key name (series_sort). It saved my change with no error, but when I restarted calibre it died. It displays the splash screen and then shuts down. I'm running version 3.35. I ran a calibre-debug -g and the output is in the attached file.

How do I fix this? The traceback looks like it's failing with a key error in a function called sort_key_func. I can't fix the sort key because I can't get calibre to run so I can edit the tweak. Is there another way to edit it or to reset it?