title: Payflow link error - token missing
body: <p>Using the payflowlink example from their documantation and altering it for my payflow account information, I get the following code:</p>
  
  <pre><code>&lt;form method="POST" action="https://payflowlink.paypal.com"&gt;
      &lt;input type="hidden" name="LOGIN" value="dcmcs1"&gt;
      &lt;input type="hidden" name="PARTNER" value="paypal"&gt;
      &lt;input type="hidden" name="DESCRIPTION" value="Invoice"&gt;
      &lt;input type="hidden" name="AMOUNT" value="5.00"&gt;
      &lt;input type="hidden" name="TYPE" value="S"&gt;
      &lt;input type="submit" value="Pay Invoice"&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>However, I get this page generic response which does not say what is missing.</p>
  
  <pre><code>Some required information is missing or incorrect. Please correct the fields below and try again.
  
  Error: Token is missing. Please return to the website from where you started your purchase and try again.
  </code></pre>
  
  <p>Any ideas?</p>