title: Success page not showing after checkout in Magento
body: <p>After the customer purchases a product the following happens:</p>
  
  <p><strong>Through Payment Gateway:<br/></strong>
  <strong>After successful transaction, it redirects to success page which is empty</strong>.
  After failed transaction, it redirects to failure page and displays perfectly.</p>
  
  <p><strong>Through COD:</strong><br/>
  It redirects back to cart page, but order is being captured under Sales.</p>
  
  <p>Also the customer and admin aren't able to receive the email notification on successful transfer whereas email is being notified for failure transactions.</p>
  
  <p>Please help.</p>