menu entry doesn't work in XFCE (permission problems?)

[Aaron Whitehouse]

Binary package hint: gsmartcontrol

I am using Karmic Mythbuntu (XFCE) and have manually installed gsmartcontrol. Clicking the menu item for gsmartcontrol does nothing.

If I type gsmartcontrol into the console, it starts and gives a graphical error about permissions. If I run gsmartcontrol as sudo, it works as expected. I understand that there is a gsmartcontrol-root that is meant to detect how to run as root on the system, but gives:
$ gsmartcontrol-root
/usr/bin/gsmartcontrol-root: 5: su-to-root: not found
So I am wondering if the menu entry points to this.

ProblemType: Bug
Architecture: amd64
Date: Sun Dec 20 21:38:30 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Mythbuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
Package: gsmartcontrol 0.8.4-2
ProcEnviron:
 LANG=en_NZ.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-16.53-generic
SourcePackage: gsmartcontrol
Uname: Linux 2.6.31-16-generic x86_64
XsessionErrors:
 (polkit-gnome-authentication-agent-1:1812): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (xfce4-menu-plugin:1871): libxfcegui4-WARNING **: XfceAppMenuItem: unable to spawn su-to-root -X -c gsmartcontrol
 (xfce4-menu-plugin:1871): libxfcegui4-WARNING **: XfceAppMenuItem: unable to spawn su-to-root -X -c gsmartcontrol
 (xfce4-terminal:2808): Terminal-WARNING **: Unable to load terminal preferences.
 (xfce4-menu-plugin:1871): libxfcegui4-WARNING **: XfceAppMenuItem: unable to spawn su-to-root -X -c gsmartcontrol