Noob Path Q

Watched Greybeard path dupliframe video and loved it! But my child object flips mid path if I extend the path?

Can’t I extend the path after I parent it?

Just remember that any curve, paths included, have a Front and a Back. To extend select the CV on the back end and use Ctrl-LMB to add the new CV’s.
(to see which way it’s pointed you can parent any dummy object to the curve with OrdinaryParent and the dotted line will point to the Front).

The flipping may be due to the dreaded Z-Axis anomally:

Taken from IamInnocent’s excellent tuts: