This seems to be the relevant bit from the DpkgTerminalLog.txt about why it's failing:
VBoxManage: error: The installer failed with exit code 1: VBoxExtPackHelperApp: error: World writable: '/usr' You should double check the permissions on /usr to make sure they're correct. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1721151 Title: package virtualbox-ext-pack 5.0.36-0ubuntu1.16.04.2 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox-ext-pack/+bug/1721151/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
