Sweep 1 not working with Circle

Hi everyone,

I am having trouble with the sweep 1 curve in grasshopper. I noticed that it is a recurring problem and so I have followed the advice of moving the section line to the start and end of the circle, as advised for others.

Unfortunately, this has not worked and the sweep 1 curve keeps on running into an error.

Does anybody know what I have been doing wrong here as the problem eludes me.

Cheers.

Sweep1Rail-Circle.gh (7.2 KB)

revolution

A perfect workaround, that worked a charm. Thanks Joseph.