[Image-SIG] PIL in the wild

I've developed an application that uses PIL+aggdraw on the server side to render and save what clients draw on the client side.I just wanted to mention how easy it was to get up and running with PIL and how small the learning curve was. I found the documentation to be very adequate. I considered

[Image-SIG] PNG Support with Parsed images.

If I load a png file with Image.open, I can manipulate it, save it etc. If I however use ImageFile.Parser(), I can read the size, format and any info, but I can't show or manipulate the image in any way. I get this exception on any of the requested methods: Here is what I'm typing: import