I made a curve using a table of X,Y,Z points. I then made a tube along this curve with a sweep. Now I'm trying to insert reference points on this curve so I can create reference planes perpendicular to the curve and place some other assemblies. Nothing I do will allow me to create points on this curve. I've tried the "distance" selection first, then I made another plane that intersects the curve and tried to make a point using the "Intersection" selection. I just keep getting the message: "failed to create reference point" Is it just me?