Scott Gammans wrote:
> 
> If you're not going to use the generally-released version of POV-Ray that's
> available to the user community, that's not a valid basis for comparison,
> is it? 

There is no point in trying to investigate in a problem if it does not 
exist in the current code.

> And if the problem truly is in the PNG library subsystem, rendering
> with ppm does nothing but confirm that the problem isn't in ppm.

Which is exactly the point i was trying to make.  If there is a memory 
problem in the png library this is something completely different.  You 
can either use a different file format or try to get a libpng programmer 
fix it.  I doubt anyone here will bother to dig into libpng internals.

Disclaimer: i have no idea if there indeed is a memory problem with png 
writing or not.

Christoph

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