> The symbol should be defined in libpng. I would guess that you don't
> have a 32-bit version of libpng installed. Did you re-configure (and
> rebuild) the copy of libpng that comes with POV-Ray with the same options?

Did all of this and it now works.  Thank you very much for your help with this.
I'm hoping that there is a more elegant solution to -32m configure flag hack
that I had to use, and, if so, I'd be very interested to hear about it.
Thanks again,
Mark

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