Ok here is the question...

OK the last one was my tired eyes, but I think this one might have been somebody else's fingers in a hurry.

This is from bitmapPNG.cpp around line 361. Notice the fifth parameter. Is this supposed to be PNG_FILTER_PATH ?

const U32 pngFilters[] = { PNG_FILTER_NONE,
PNG_FILTER_SUB,
PNG_FILTER_UP,
PNG_FILTER_AVG,
PNG_FILTER_PAETH,
PNG_ALL_FILTERS };