Project to closest point

 From:  Michael Gibson
1429.3 In reply to 1429.1 
Hi Mike, the project with the closest point option does tend to be buggy right now, especially when used on closed curves or where it crosses the "seam edge" of a closed surface.

For now you may get better results with it if you split a closed curve into 2 pieces and project the pieces, or use the default directional projection which does work a lot better.

- Michael