Couldn't recognize the image file format for file '*.png'

[Paweł Sikora]

[~/rpm/BUILD/gtk+-2.9.4/demos]$
GDK_PIXBUF_MODULE_FILE=../gdk-pixbuf/gdk-pixbuf.loaders ../gdk-pixbuf/gdk-pixbuf-csource --raw --build-list 
apple-red apple-red.png
failed to load "apple-red.png": Couldn't recognize the image file format for 
file 'apple-red.png'

[~/rpm/BUILD/gtk+-2.9.4/demos]$ file apple-red.png
apple-red.png: PNG image data, 48 x 48, 8-bit/color RGBA, non-interlaced

to jakiś nowy ficzer świeżego libpng?