Description:
The xbmc-11.0-11 package was changed to add an xbmc group and xbmc user. However the creation of the xbmc user fails. This is the x86_64 xbmc, on a multilib install, using systemd.

Additional info:
Including terminal output illustrating the problem:
[family@mediacenter ~]$ sudo groupdel xbmc
groupdel: group 'xbmc' does not exist
[family@mediacenter ~]$ sudo pacman -S xbmc
warning: xbmc-11.0-11 is up to date -- reinstalling
resolving dependencies...
looking for inter-conflicts...

Targets (1): xbmc-11.0-11

Total Installed Size: 62.78 MiB
Net Upgrade Size: 0.00 MiB

Proceed with installation? [Y/n] y
(1/1) checking package integrity [#######################################################################] 100%
(1/1) loading package files [#######################################################################] 100%
(1/1) checking for file conflicts [#######################################################################] 100%
(1/1) checking available disk space [#######################################################################] 100%
(1/1) upgrading xbmc [#######################################################################] 100%
useradd: group xbmc exists - if you want to add this user to that group, use -g.
usermod: user 'xbmc' does not exist
error: command failed to execute correctly
[family@mediacenter ~]$ sudo userdel xbmc
userdel: user 'xbmc' does not exist
[family@mediacenter ~]$ sudo groupdel xbmc
[family@mediacenter ~]$


Steps to reproduce:
I verify the xbmc group and user don't exist, install xbmc-11.0-11, get odd output saying the group exists, and that the user can't be created, followed by an error, then verify the group is created, but not the user.