About "SplineController" Javascript

I have successful used "SplineController" javascript.

But I don't want to conncet the head and tail into a circle.

I makee a roller coaster.

I want camera follow roller coaster's path.

But "SplineController" let roller coaster's head and tail around a circle. alt text Like attachment, part of white line is superfluous. I don't want this line.

What can I do? I think the question is in "SplineController".

Thanks everyone.

SplineController code http://www.unifycommunity.com/wiki/index.php?title=Spline_Controller

It looks like that you use that controller instead of the one you’ve mentioned. If I’m right, uncheck Auto Close option in Spline Controller script.