Facebook Error validating client secret

Already read through the thread Facebook Login "Error validating client secret" and I am getting the same error. Client OAuth Login and Web OAuth Login are enabled.

I am attaching screenshots for help trouble shooting.

15 AM

and

Solved! Had to chose a page for SSD/Oauth redirect

The login_page in your screenshot is the page where the login with facebook button is? Or is this the page where the user is redirected after logging in.