Hi unfortunately you can't mix vbox from oracle with the ext pack from Ubuntu, specially for different major releases.
G. ** 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/1644365 Title: package virtualbox-ext-pack 5.0.24-0ubuntu1.16.04.1 failed to install/upgrade: il sottoprocesso installato script di post- installation ha restituito lo stato di errore 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox-ext-pack/+bug/1644365/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs