I have a 3D spline and I want to create equidistant points on the spline. I have no issues using the Insert\Reference Geometry\Point command on a 2D sketch, but is seems to fail with a 3D spline. For example, it works well when the 3dspline is on a simple surface, but when it is on a more complex surface it fails. see below and attached file. 3dsketch1 is ok, 3dsketch2 fails.
Note that the surface is a single continuous surface.