Is it possible your app is in the sandbox mode? See last paragraph in
the "Facebook" section:
On Wed, Jun 19, 2013 at 2:41 PM, Gezim Haziri <gezi...@gmail.com
> I created a new facebook app with my facebook account. I then created a GAE
> website with facebook login and it works perfectly when I sign in using that
> same email as I registered my app with. But when I try to log in with any
> other facebook account I get KeyError: 'access_token'. Has anyone idea what
> is going on here and what to do?
> thanks in advance.
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