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Hi Lukas,

Here is my passive chip. In this design, there are still two kinds of errors, but I suppose they can be ignored.

1. the overlap between the stright waveguide and the pins of the spiral.
2. the spiral_paperclip also reports an error. This error is directed to the center of the layout, but there is no components at there. I just drag the spiral_paperclip from the library, and change the number of loops. I didn't change the radius. So I suppose this is a script error? Can we ignore it?

Please check my design. 

Thank you.
Yiran Guan