Page 10: facebook error 191

 API Error Code: 191

After installing Facebook single-sign-on and trying to sign-in with your Facebook account you get this message:

API Error Description: The specified URL is not owned by the application
Error Message: redirect_uri is not owned by the application.

Why

While registering the application you had to provide the URL of the site. That URL is not the same as the URL from which you run the script and get the 191 error. You have to fix that.

Reolving General
If you specified the main URL (www.mysite.com), and the script is on sub-domain (subdomain.mysite.com) do this

• Register the app with the URL of the sub-domain.

If you specified the main URL with www (www.mysite.com) and called the script from the URL without www (mysite.com) or Vice Versa (specified without WWW and called with WWW) do this

• Call this script from same URL as specified in app settings.