I tried and tried to get this little image to show up and never could figure it out. Nothing I did would make it appear. I'd scale it and change colors, everything I could think of but no go. So I edited it and made it twice as big and then it showed up. Is there some sort of minimum size? This little .png image is 16x32. I made it 32x64 and it worked but it won't work at 16x32.
Comments
Your image was an indexed 7 colour image. Take into something like gimp and switch it to 24-bit RGB.
Then it loads all fine.