you seem to have virtualbox 5.1 and trying to install ext-pack 5.0. Please use the official ext pack with the official virtuabox.
** Changed in: virtualbox-ext-pack (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1613315 Title: package virtualbox-ext-pack 5.0.24-0ubuntu1.16.04.1 failed to install/upgrade: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox-ext-pack/+bug/1613315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs