001+ GIF to PNG conversion: libpng warning: Application was compiled with png.h from libpng-1.6.10
001- GIF to PNG conversion: ok
002+ libpng warning: Application is running with png.c from libpng-1.2.49
003+
004+ Unknown error: imagepng(): gd-png: fatal libpng error: Incompatible libpng version in application and library
005+ in Unknown on line 0