It looks like something installed an older version of the "msgpack- python" pip package in a way that superceded the global pip packages. I was able to fix it with:
pip install --upgrade --user msgpack-python This should probably be closed, then. -- You received this bug notification because you are a member of Edubuntu Bugsquad, which is subscribed to calibre in Ubuntu. https://bugs.launchpad.net/bugs/1838862 Title: calibre crashes during startup To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1838862/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~edubuntu-bugs Post to : edubuntu-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~edubuntu-bugs More help : https://help.launchpad.net/ListHelp
