
That sketch diameter did not work. Also, "rigid" did not work, which one would expect to be the case here.
Rigid does not allow the profile to change angle, so it ends up parallel to the last bit of the sweep, which is not allowed.*
If the profile is too large, the sweep intersects itself, but that does not seem to happen here.
I had to change to 0.06m profile before it would sweep. 0.061 was too big. Apparently the software decided it would intersect or otherwise not "result in a valid body".
* The help refernce associates "entire path" with "rigid" which is not appropriate. Rigid cannot be applied if the sweep turns 90 degrees.