Date Updated: 02/13/2018
This MCG gets rid of the flipping problem as with the default Path Constraint. It also allows the constraint to be based on an axis of a controlling object.
Supports multi-spline path.
Then controller can be found in Motion Panel>Assign Controller
Ver 1.01: now includes Arc Length (Distance) mode
3ds Max Version Requirement: 2016
Other Requrements: Max 2016 + Extension1/2 + SP3. Max 2017/18.