what did you do? can you please try my ppa? and use the ubuntu virtualbox sudo apt-get remove --purge virtualbox-5.1 https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/virtualbox-ppa
** Changed in: virtualbox-ext-pack (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1686994 Title: package virtualbox-ext-pack 5.1.18-1 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 4 zurück To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox-ext-pack/+bug/1686994/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs