title: getting no return data on notification url from paypal in adaptive paypal chained payment
body: <p>I am using chained method of adaptive payment:
  params are like this:</p>
  
  <pre><code>$bodyparams = array("requestEnvelope.errorLanguage" =&gt; "en_US",
              "actionType" =&gt; "PAY",
              "currencyCode" =&gt; "USD",
              "cancelUrl" =&gt; "www.example.com/courses/cancelPurchase/", 
              "returnUrl" =&gt; "www.example.com/courses/buyCourse/" . $courseId . "/" . $courseDetails['Course']['certificate_amount'], 
              "receiverList.receiver(0).email" =&gt; $adminDetails['paypal_email'], 
              "receiverList.receiver(0).amount" =&gt; round($courseDetails['Course']['certificate_amount'], 2), 
              "receiverList.receiver(0).primary" =&gt; "true",
              "receiverList.receiver(1).email" =&gt; $courseDetails['UsersRole']['User']['paypal_email'], 
              "receiverList.receiver(1).amount" =&gt; $courseCreatorAmount, 
              "receiverList.receiver(1).primary" =&gt; "false", 
              "ipnNotificationUrl" =&gt; "www.example.com/courses/ipnReturn", 
          );
  </code></pre>
  
  <p>Here I am not getting  any data on <strong>ipnNotificationUrl</strong> provided.
  It seems that after returning from paypal it is not at all hitting this url.</p>
  
  <p>Please help!!</p>
  
  <p>FYI: I am using cakephp as framework.</p>