Traceback error when opening system-config-samba; no such file/dir: /etc/libuser.conf

Ubuntu 15.04. Fully updated as of this writing. I installed system-config-samba from the repos to manage some samba shares. Upon installation, the "Samba" application icon never appears in the list of applications in the dash. I did however attempt to launch it via terminal as root, but what I got was this.

root@JSZ835:/etc# system-config-samba
Traceback (most recent call last):
  File "/usr/sbin/system-config-samba", line 45, in <module>
    mainWindow.MainWindow(debug_flag)
  File "/usr/share/system-config-samba/mainWindow.py", line 121, in __init__
    self.basic_preferences_win = basicPreferencesWin.BasicPreferencesWin(self, self.xml, self.samba_data, self.samba_backend, self.main_window)
  File "/usr/share/system-config-samba/basicPreferencesWin.py", line 97, in __init__
    self.admin = libuser.admin()
SystemError: could not open configuration file `/etc/libuser.conf': No such file or directory

If I run "touch /etc/libuser.conf", then re-run system-config-samba as the root user, it opens the interface. Even afterwards, the application icon is no where to be found in the dash.

I also noticed the desktop file had this entry: Exec=gksu system-config-samba

However, gksu is seemingly not installed by default on 15.04.

Thank you for your hard work, dedication, and time! Have a great day.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: system-config-samba 1.2.63-0ubuntu6
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Fri May 8 13:22:37 2015
InstallationDate: Installed on 2015-04-21 (17 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150417.1)
PackageArchitecture: all
SourcePackage: system-config-samba
UpgradeStatus: No upgrade log present (probably fresh install)