I reproduced the issue on trusty, and byobu 5.77-0ubuntu1.1 fixed the issue for me. After I upgraded the package, I no longer got the error message when I pressed F5.
** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to byobu in Ubuntu. https://bugs.launchpad.net/bugs/1311919 Title: [SRU] pressing F5 throws errors about windows.tmux missing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/byobu/+bug/1311919/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs