I was on Rhino 5 before the current version.
Blend Edges replaced Variable Radius Blend on the latest version, I think I am right about this. My problem is, the Blend Edges is not working like it used to. For years I have been adding radius’s to edges exactly like these without a hick-up in Rhino 5. Many very basic clean edges on surfaces are not working and I get a message that there is a creased surface. Is there a tolerance setting or something to remedy this? I have attached a picture of one that worked and one that did not.