Facebook sdk strange problem.

Just downloaded facebook sdk to try intagration:

if (FB.IsLoggedIn)
        {
            if (GUI.Button (new Rect (Screen.width - 155, 80, 150, 35), "Post to wall")) 
            {
                FB.Feed(
                linkCaption: "Integration test",
                picture: "http://www.iiacanadanationalconference.com/wp-content/uploads/2013/01/test.jpg",
                linkName: "Checkout my test app at: ",
                link: "http://apps.facebook.com/nbgtestapp/");
            }
			if (GUI.Button (new Rect (Screen.width - 155, 115, 150, 35), "Invite friends")) 
            {
                FB.AppRequest(
                    message: "Check out test app",
                    title: "Friend request"
                );
            }
        }

Post to wall works fine, but something wrong with FB.AppRequest…
When anyone who gets request (me to) pressing Accept the link goes to “Sorry, this page isn’t available
The link you followed may be broken, or the page may have been removed.”

Any one please? Give me atleast some tips about what can be wrong here

Hi,

quick question: did you solve this problem? I’m facing the same problem and dont know why?

Edit: when logged in via the Android Facebook app, the link works fine and redirects to the app in the play store. But same issue when using Facebook with a browser.

Edit2: Problem solved. You need Facebook to approve your app to make the links work!