Originally Posted by radioactivetoy
I can get it to work, i'm getting this error:
error: unpack_from requires a buffer of at least 8 bytes
calibre, version 0.7.44
ERROR: Unhandled exception: <b>error</b>:unpack_from requires a buffer of at least 8 bytes
Thanks for reporting this - and identifying it was a book. In the latest version 1.3.2 I added code to check for additional invalid book formats in order to print a warning and not exist. Hopefully this will identify the book with the issue so you can reconvert it.