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Posted: 2006-03-17T10:32:27-07:00
by magick
ImageMagick requires the optional PNG delegate library to read/write PNG. Type
  • identify -list format
on both machines. Chances are on the one that fails, it does not mention PNG with a mode of rw-. If so, rebuild the distribution and ensure PNG support is noted after you run the configure script.

Posted: 2006-03-17T20:50:15-07:00
by magick
To add PNG support to ImageMagick download the PNG delegate library and build/install. Next rerun the ImageMagick configure script and ensure the output of the script says it found the PNG delegate library.

Posted: 2006-03-20T13:14:06-07:00
by magick
The reason the PNG delegate library failed to validate can be found in the config.log file generated by the configure script. Fix the problem and rerun the configure script until the PNG delegate library is validated.