I'm trying to use Gimp to export a small line-style icon with a transparent background. It looks good in Gimp (black icon on the checkerboard of transparency), but the image disappears when exported as .png or .gif - it comes out with a totally transparent image file! .jpg of the same image works, but I lose the transparency.
I've tried other images, and it works fine. This is the fairly standard black circle with an 'i' in the middle.