FAIL: See images for which error they produce, an additional error is produced because there is more than one image with transparent pixels

And finally a 3D jpeg smiley

FAIL: this is a reference to an image that doesn't exist in this directory and therefore has a retrieval error

And you can't see this large transparent image

FAIL: this is a transparent image that exceeds the 2x2 limit

Or this extrordinarily small transparent image

WARN: this is a small transparent image