Hi Ralf,
This is very helpful. I was able to basically reproduce the model example in the screenshot you provided, and I added a couple stops to my network analyst toolbar in ArcMap so that it would run. As you can see, it sees the two stops I provided, it says it ran successfully, but it doesn't put a result in the results window for me to be able to export. Am I missing something here on this last piece?
Thanks,
James