*Completely* update your system and try again. We had some issues earlier today with half of the Qt stack migrating, but it should be fine now (I can't reproduce this after updating my system).
** Changed in: calibre (Ubuntu) Status: New => Incomplete -- 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/1739518 Title: calibre crashed with SIGABRT in qt_message_fatal() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1739518/+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