I can confirm that using the binary from http://calibre- ebook.com/download_linux has solved the problem for me.
Distrubuted version by Ubuntu: 2.20.0+dfsg-1 Installed binary version: 2.31 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1451043 Title: Crash when Adding Ebook To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calibre/+bug/1451043/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs