Yeah, it looks like it's working correctly now. You can lock this one, unless a dev wants to look into why it happened in the first place. There's obviously some kind of issue with the thumbnail generation, since the initial upload is literally the image being used for the achievement on people's profiles, and that thumbnail is still black. The other three thumbnails in the file history (including the first one, which was black when I created this thread) are all correct. Silvyre said: It's strange; the first file that you uploaded was 65 KB, while the original image is 77 KB? Likely a difference in how much metadata is saved into the file. My fix attempt took the original image, opened it in GIMP, and exported that image as a PNG. GIMP may simply save the image with less metadata than whatever was used to create the image in the first place.