Thanks guys, that was it.  My bad understanding/reading of the sphere_sweep.
All is now good.

Thank you my friends.

Neil

"Slime" <fak### [at] emailaddress> wrote in message
news:41bba582$1@news.povray.org...
> >    b_spline,
> >    3,
>
> Certian spline types require a minimum number of control points. b_spline,
> for instance, I believe requires at least 4. If you just want a spline
that
> goes smoothly through each point, I would recommend using a cubic_spline,
> for which you need a single extra point at the beginning and end of the
> list; these two points won't be shown on the spline but they affect the
> behavior of the spline at the beginning and end.
>
> POV-Ray could/should probably give a better error message than "attempt to
> malloc zero size block" for this sort of thing.
>
>  - Slime
>  [ http://www.slimeland.com/ ]
>
>

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