title: Azure MobileApp Client SDK crashes on Xamarin.Forms (Android)
body: <p>The reproduce the error, I've created a blank mobile app and a new sql database.
  Afterwards I've followed the quickstart guide and downloaded the backend and the Xamarin.Forms project. </p>
  
  <p>I've deployed the Web-App to azure and started the Android app using the <code>5'' KitKat (4.4) XXHDPI Phone (Android 4.4 - API 19)</code> emulator.</p>
  
  <p>As soon as I add an item to the TodoItem - List (you see, it's the default sample app of xamarin mobile apps), the <code>todoTable.InsertAsync</code> call fails. 
  Unfortunately, there is no detailed error.</p>
  
  <p>It's just a error message telling "An unhandled exception occured". 
  <a href="https://i.stack.imgur.com/zi6WX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zi6WX.png" alt="Error"></a></p>
  
  <p>In the output window, I can see the following error:</p>
  
  <pre><code>03-01 19:48:33.781 I/MonoDroid( 1512): UNHANDLED EXCEPTION:
  03-01 19:48:33.793 I/MonoDroid( 1512): Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException: The request could not be completed.  (Internal Server Error)
  03-01 19:48:33.793 I/MonoDroid( 1512):   at Microsoft.WindowsAzure.MobileServices.MobileServiceHttpClient+&lt;ThrowInvalidResponse&gt;d__24.MoveNext () [0x001ec] in &lt;42e24ce875d34485ad11c4f8aebb904a&gt;:0 
  </code></pre>
  
  <p>So I've had a look at the azure mobile app in the azure portal.
  Before I've ran the tests, I've enabled almost all the logs.
  I can see FREB-Protocols I can see a post request to /tables/TodoItem which failed with http 500. Unfortunately it does not tell my anything about the error itself. Authentification is disabled, so the authentification should not cause any problems.</p>
  
  <p>I've included the whole log here: 
  <a href="https://1drv.ms/b/s!AqCo2Ottp6L6wC7-nOFkDN7cERE6" rel="nofollow noreferrer">https://1drv.ms/b/s!AqCo2Ottp6L6wC7-nOFkDN7cERE6</a></p>
  
  <p>Does anyone got any idea what could be wrong? Sitting here since far to many hours, guessing what could be wrong.</p>