Hi dune1982, it seems that script there is not complete, I get an error:

ReferenceError: Can't find variable: steigung on line 13, is there some previous part of the script that is missing in your post?

Looking over your last calls to the sweep, the problem might be that you are specifying twist = "flat" but not providing the flat direction which is on input index 12 : Point - "Flat direction" - Direction vector for twist=flat mode.

But I can't tell for sure if that is why it's failing because I'm not able to run the script over here due to the variable named steigung missing from the script.

- Michael