try using the set tangent at spline point with coordinate mode set to local. it was not working for me. Then i switched to world mode and converted all my calculation to world space by using absolute scale and all, then it worked.
try using the set tangent at spline point with coordinate mode set to local. it was not working for me. Then i switched to world mode and converted all my calculation to world space by using absolute scale and all, then it worked.