SWEEP 2 - not getting cross sections

Hi!

I am trying to use sweep2 to make a surface and later continue working in GH. But for some reason when sweeping I get to select the rails but no cross sections, instead it wants me to select sweep shapes.

When the sweep is done it looks good but it is a polysurface that cant be selected and bound to GH. Does anyone have a solution to this?

Best regards Emil:)

Could you share you 3dm file here? Thank you.

Anthropocene - project2.3dm (40.3 KB)

Here it is! Worth mentioning is that I had some large problems with rhino crashing for like a week, the somehow it got solved after a lot of tweaking here and there. Perhaps there is some setting that I have changed by accident?

This is because both curves used as rails are polycurves with multiple kink points. You can use EdgeSrf +MergeSrf to obtain a single surface, and for you reference.

Wow what a smart solution, thank you so much for the help!