facebook/facebook-ios-sdk — Issue #403: Safari is redirected to API Error code: 100 when user has already gave permissions to the app
Author: aviell
Created: 2011-10-16 16:13:35+00:00
State: open

Reproduced in Hackbook:
1. Authenticate with your Facebook account to HackBook
2. Logout Hackbook
3. Try to login again, you are redirected to an empty page with the title "Permissions".
4. Clicking OK redirects to an error page with the URL https://www.facebook.com/dialog/permissions.request?refid=0 - in my app it showed "Requires valid redirect URI" in HackBook it showed: "An error occurred with Hackbook for iOS. Please try again later."

I've posted a temp solution here:
http://stackoverflow.com/questions/7785426/authentication-using-facebook-ios-sdk-with-safari-throws-api-error-code-100