Hi Dieter, looks like the order got incorrect. This exercise is based on the model extensions exercise. I’m curently updating this exercise to the new way of registering model fragments and afterwards with also update the command exericse. I hope I get this done by tomorrow.

Sorry for the delay.

Sorry takes longer then expected, https://learn.vogella.com/exercises/rich-client-platform/contribute-to-the-application-model-via-model-fragments-whr5E#exercise-contributing-menus-via-model-fragments is updated and I will look at the keybinding exercise tomorrow.

https://learn.vogella.com/exercises/rich-client-platform/copy-to-clipboard-SnCcA#application-model-changes has been updated, please reopen if you still see issues.