Screenkey in Kubuntu 12.04?

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http://askubuntu.com – I'm trying to run Screenkey in order to screencast a tutorial in which the attendants are to see my key strokes. However, it runs out that although Screencast didn't require any additional dependencies on Kubuntu, whenever I attempt to use the "Preferences" (dialog?) nothing gets shown and the application freezes. The icon for Screenkey in the notification bar also doesn't react anymore from that point on. Would this be a bug or expected behavior on Kubuntu? (HowTos)