It looks like it tried to stop it but errored. Do me a favor, and see if it works when you have nginx running, as it should automatically try and stop the server anyways...
sudo service nginx start then run the upgrade... sudo apt-get install -f See if that resolves the failure error here. ** Changed in: nginx (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to nginx in Ubuntu. https://bugs.launchpad.net/bugs/1527723 Title: package nginx-core 1.4.6-1ubuntu3.3 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 7 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nginx/+bug/1527723/+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