Hi @dale,
Can you please confirm that neither of Curve.ClosedCurveOrientation three overloads is safe to be used in Rhino 5? That is: regardless of which overload is chosen, it is not safe to use either of those three even in the latest Rhino 5 SR13?
Or is does the bug on Rhino5 only exist with the Curve.ClosedCurveOrientation(Plane) one?