I am trying to let a ball rest on top of a spring as shown below. However, when I try to apply a tangent constraint and align the parts at the same time, I get the error message "Constraints Invalid." I want the axes to line up so that the ball does not "swallow" a part of the spring. I have tried to align the parts using datum planes as well, but with no success. Why are the constraints incompatible? How can I make it work? -- Thanks.
View attachment 3008
View attachment 3008