Gnome-Dictionary Plugin in Synapse doesn't work

[themeles]

I have Ubuntu 12.04 and the Synapse Version 2.10. The Dictionary Plugin is activated and Gnome Dictionary installed and a Dictionary Server is available.

But there is no entry that says dictionary in the "menu" neighter is there a option to translate at the drop-down selection when I type a random word. I already tried to reinstall Gnome-Dictionary and Synapse.

The output on a manual Synapse restart is:
[18:09:34.993361 Info] [UILauncher] Binding activation to <Control>space
[18:09:34.993535 GtkHotkey-Debug] Listener Type: GtkHotkeyX11Listener
[18:09:35.012918 Info] [GuiViewDefault] Screen is composited.
[18:09:35.013162 Info] [GuiViewDefault] Using ibus input method.
[18:09:35.168540 Warning] [DesktopFileInfo] Not Application-type desktop entry
[18:09:35.502401 Warning] [DesktopFileInfo] Unable to create AppInfo
[18:09:35.540558 Info] [GnomeSessionPlugin] org.gnome.SessionManager is available
[18:09:36.088768 Info] [HybridSearchPlugin] keeps in cache now 949 file names