I'm working on a download/backup feature for my ScrapBook client, and I'm having trouble retrieving the image data. The documentation says I should fetch the data with HTTP GET, and: "The image will only be available if the proper credentials are present -- either a web session cookie or the X-FB-Auth header." I'm supplying an X-FB-Auth header that I'm pretty confident about, but for non-public pictures I get
403 Forbidden. So is the documentation correct?