Aha! Sorry about that. There is an unfortunate side effect with these kinds of thingamajobbers. This formulation is designed for a disc which has a radius of 1.0 and is oriented with the flat side in the y direction. In other words, if you create a cylinder in the spline modeler with a width and heights of 2.0, you'll get it.

Of course it has a very thin thickness of 0.02 which means the extrusion path endpoints are both at -0.01 and 0.01. respectiviely.

If you create a cylinder by pulling in a cylinder primitive and squarsh it by chagning it's percentage in the z direction, you're disc will;
A be oriented in the wrong coordinates.
B not have the correct radius.

So, don't do that because it won't work. You have to use the disc in the spline modeler.

I hadn't tried to make one for a sphere which is a cool idea and may make an interesting effect. I'll see what I can do. Maybe mystery guest number 1 would like to give this a try considering SHE is the formula MASTER!

-Kix