if you rebuild the curve or move one of the control points(just slightly) than everything is fine but with the original setup, things really get weird. I am on win 7.
Hi ed, that's a display bug, it can happen if you have just a certain kind of S shape that as its start and end tangent going in the same direction. I'd like to fix that up in the future but it's a delicate area to improve without degrading performance and it's pretty rare.
