docky doesn't show on desktop after install on ubuntu 14.4

[Himanshu Sharma]

Error when I type Docky in my terminal.

[Info 16:05:29.393] Docky version: 2.2.1 bzr docky r1845 ppa
[Info 16:05:29.401] Kernel version: 3.13.0.24
[Info 16:05:29.403] CLR version: 4.0.30319.17020
[Debug 16:05:29.665] [UserArgs] BufferTime = 0
[Debug 16:05:29.665] [UserArgs] MaxSize = 2147483647
[Debug 16:05:29.665] [UserArgs] NetbookMode = False
[Debug 16:05:29.665] [UserArgs] NoPollCursor = False
[Error 16:05:29.686] [SystemService] Could not initialize power manager dbus: 'org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.UPower" doesn't exist
'
[Info 16:05:29.688] [SystemService] at Docky.Services.SystemService+IUPowerProxy.Get (System.String interface, System.String propname) [0x00000] in <filename unknown>:0
  at Docky.Services.SystemService.HandleUPowerChanged () [0x00000] in <filename unknown>:0
  at Docky.Services.SystemService.InitializeBattery () [0x00000] in <filename unknown>:0
[Info 16:05:29.731] [ThemeService] Setting theme: Classic
[Debug 16:05:29.737] [DesktopItemService] Loading remap file '/usr/share/docky/remaps.ini'.
[Debug 16:05:29.741] [DesktopItemService] Remapping 'Picasa3.exe' to 'picasa'.
[Debug 16:05:29.741] [DesktopItemService] Remapping 'nbexec' to 'netbeans'.
[Debug 16:05:29.741] [DesktopItemService] Remapping 'deja-dup-preferences' to 'deja-dup'.
[Debug 16:05:29.741] [DesktopItemService] Remapping 'VirtualBox' to 'virtualbox'.
[Warn 16:05:29.742] [DesktopItemService] Could not find remap file '/home/himanshu/.local/share/docky/remaps.ini'!
[Debug 16:05:29.744] [DesktopItemService] Loading desktop item cache '/home/himanshu/.cache/docky/docky.desktop.en_IN.cache'.
[Info 16:05:29.871] [DockServices] Dock services initialized.
[Error 16:05:29.877] [DBusManager] Bus Name 'org.gnome.Docky' is already owned
[Fatal 16:05:29.877] Another Docky instance was detected - exiting.