cannot launch sound settings from indicator-sound applet panel

[Nordin]

XUBUNTU 14.04 full updated.

1) lsb_release -rd :
Description: Ubuntu 14.04.1 LTS
Release: 14.04

2) sudo apt-cache policy indicator-sound
[sudo] password for $USER:
indicator-sound:
  Installed: 12.10.2+14.04.20140401-0ubuntu1
  Candidate: 12.10.2+14.04.20140401-0ubuntu1
  Version table:
 *** 12.10.2+14.04.20140401-0ubuntu1 0
        500 http://es.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

3) launch pulse audio volumen control
4) nothing. I captured the log(/home/$USER/.cache/upstart/indicator-sound.log):

** (process:1854): WARNING **: service.vala:222: unable to launch sound settings: Failed to execute child process "gnome-control-center" (No such file or directory)

** (process:1854): WARNING **: volume-control.vala:487: unable to sync volume to AccountsService: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No such interface 'com.ubuntu.AccountsService.Sound'

** (process:1854): WARNING **: volume-control.vala:487: unable to sync volume to AccountsService: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No such interface 'com.ubuntu.AccountsService.Sound'

** (process:1854): WARNING **: volume-control.vala:487: unable to sync volume to AccountsService: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No such interface 'com.ubuntu.AccountsService.Sound'

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: indicator-sound 12.10.2+14.04.20140401-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ActionStates: ({'next.vlc.desktop': (true, signature '', @av []), 'mute': (true, '', [<false>]), 'phone-settings': (true, '', []), 'next.gmusicbrowser.desktop': (true, '', []), 'mic-volume': (true, '', [<0.2196044921875>]), 'scroll': (true, 'i', []), 'play-playlist.gmusicbrowser.desktop': (true, 's', []), 'gmusicbrowser.desktop': (true, '', [<{'running': <false>, 'state': <'Paused'>}>]), 'desktop-settings': (true, '', []), 'previous.vlc.desktop': (true, '', []), 'vlc.desktop': (true, '', [<{'running': <false>, 'state': <'Paused'>}>]), 'volume': (true, 'i', [<0.46710526315789475>]), 'play-playlist.vlc.desktop': (true, 's', []), 'root': (true, '', [<{'title': <'Sound'>, 'accessible-desc': <'Volume (46%)'>, 'icon': <('themed', <['audio-volume-medium-panel', 'audio-volume-medium', 'audio-volume', 'audio']>)>, 'visible': <true>}>]), 'previous.gmusicbrowser.desktop': (true, '', []), 'play.gmusicbrowser.desktop': (true, '', [<'Paused'>]), 'play.vlc.desktop': (true, '', [<'Paused'>])},)
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed Jul 23 15:47:23 2014
InstallationDate: Installed on 2014-05-31 (52 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
SourcePackage: indicator-sound
UpgradeStatus: No upgrade log present (probably fresh install)