Getting 401 response from C2DM
<p>I am getting exception from google saying:</p>

<pre><code>java.io.IOException: Received authentication challenge is null 
</code></pre>

<p>I read that this is reproducing 401 error. So this </p>

<pre><code>Indicates that the ClientLogin AUTH_TOKEN used to validate the sender is invalid. 
</code></pre>

<p>But i have everything registreted and logined with ClientLogin successfully.
So what wrong could be?</p>

<p>Also do i need to reigstrate my app here ?</p>

<p><a href="https://developers.google.com/android/c2dm/signup?hl" rel="nofollow">Sing up for C2DM</a></p>

<p>Because i haven't
Thanks</p>
