Facebook.mobileLogin problem. “OAuthException” message: “Error validating application.”

Question

I try to login on facebook using facebook action script SDK.

FacebookMobile.init("my_app_id", initCallback);
private function initCallback(success:Object, fail:Object):void
        {
            trace("initCallback");
            trace("success: " + success);
            trace("fail" + fail);

            var appPermissions:Array = new Array("read_stream", "offline_access", "publish_stream", "read_friendlists");
            Facebook.mobileLogin("http://foo.example.com/", "touch", appPermissions);
        }

        private function loginCallback(success:Object, fail:Object):void
        {
            trace("loginCallback");
            trace("success: " + success);
            trace("fail" + fail);
        }

But I fail with error while calling mobileLogin:

{
   "error": {
      "message": "Error validating application.",
      "type": "OAuthException"
   }
}

I read this answer, guys say it helps, but for me it was not successfull. Unable to get access token from Facebook. Got an OAuthException says "Error validating verification code" How can I solve this, anybody help please. Thanx!