Control Point (child) objects with Parent Constraint tag
This script was integral for a project I worked on last fall - thanks Hiroto!
There is one aspect that could use some attention. The script's child objects are used as control points in the spline. If you apply the Parent Constraint tag to parent the objects to another object, then animate, the child do not follow as expected. Rather, you must refresh their positions by turning the tag 'off', then 'on' again.
I noticed this script was of current interest and figured it might be helpful to add a link to a tutorial I made a while ago. It is intended to explain how to use the related Tag script to easily make complex models.