I've installed the new version this morning and I'm getting this error:
Spoiler:
calibre, version 2.63.0
ERROR: CALM: GENERATION OF CUSTOM COLUMNS TERMINATED PREMATURELY........ERROR: >>>>FAILURE for: calibredb add_custom_column --library-path="D:/Biblioteca Kindle/CALM" --display="{\"enum_values\":[\"ARC\", \"Biblioteca\", \"Bolt.CD\", \"Bombo\", \"Comprados\", \"Ficha\", \"First Reads\", \"Kindle Unlimited\", \"Omnibus\", \"Pagina autor\", \"Regalo\", \"Serial\", \"ePubLibre\", \"libring\", \"mirc\", \"mobileread\", \"mobilism\", \"papyrefb2\"]}" ori "Origen" enumeration
and the last error message is:
It worked yesterday with the previous version. I've got calibre 2.63.