Hi Markus,
sorry that your email somehow slipped through. You did everything correctly on your part. The problem is caused by a policy hard-coded in launchpad. See:
https://github.com/genodelabs/genode/blob/master/demo/src/lib/launchpad/laun...
By taking a look in the 'Launchpad::Launchpad' constructor, you will see what I mean. You will need to add "Nic" to the line where the other services such as "Nitpicker" are listed.
Compared to 'init', the configuration of launchpad is pretty archaic. We are using it just for demo purposes. So it is receiving not much love.
Cheers Norman