When doing an rpm based upgrade from 1.4.1 to 1.5 rc2 it fails with below:

Downloading Packages:
foreman-1.5.0-0.2.RC2.el6.noarch.rpm | 3.1 MB 00:00
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Updating : foreman-1.5.0-0.2.RC2.el6.noarch 1/2
Error unpacking rpm package foreman-1.5.0-0.2.RC2.el6.noarch
warning: /etc/cron.d/foreman saved as /etc/cron.d/foreman.rpmsave
warning: /etc/foreman/settings.yaml created as /etc/foreman/settings.yaml.rpmnew
error: unpacking of archive failed on file /usr/share/foreman/config/settings.plugins.d: cpio: rename
Verifying : foreman-1.5.0-0.2.RC2.el6.noarch 1/2
foreman-1.4.1-2.el6.noarch was supposed to be removed but is not!
Verifying : foreman-1.4.1-2.el6.noarch 2/2

Failed:
foreman.noarch 0:1.4.1-2.el6 foreman.noarch 0:1.5.0-0.2.RC2.el6

Complete!

Br, Peter