iOS 6 the facebook server could not fulfill this access request invalid application

Question

In some iPhone 5 devices we have an error when trying to call Facebook login:

The error is: \"the facebook server could not fulfill this access request invalid appli

Answer 1

More than likely the app is "sandboxed", so only developers have access. If this is the case you'll have to use a developer account on the iPhone.

1. Go to iOS settings > Facebook
2. Log out with your "personal" account
3. Log in with the developer account (to be safe us the dev account that you created the app with)

This worked for me.