Set Keyboard Shortcut: Keybinding could not be found

[Tobias Preuss <tobias preuss googlemail com>]

Hello.
I am trying to set a keyboard shortcut to show the main interface.
When I try this an error message is shown: "Keybinding could not be
found". You can see it in the screenshot [1].

I am running Ubuntu 14.10. and built Kupfer from source and created a
.desktop file in ~/.local/share/applications/.
Please let me know if I can add more information to get this sorted out.

Thank you.
Tobias


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[1]: http://s24.postimg.org/6b8o5x4hh/kupfer.png