It works great with original user IDs. For identifiers with applications, I did not understand how to use them.
While http://graph.facebook.com/v2.0/APP_SCOPED_ID/picture should work with the new application area identifiers, I can get this answer:
{ "error": { "message": "Unsupported get request.", "type": "GraphMethodException", "code": 100 } }
Please note that this answer is different from the response to completely invalid identifiers. If you use an invalid user id, you will receive:
{ "error": { "message": "(#100) No node specified", "type": "OAuthException", "code": 100 } }
EDIT: since May 10, 2014 this is a known bug.
The Graph API is currently running http://graph.facebook.com/v2.0/APP_SCOPED_ID?fields=picture
winternight
source share