title: Podio Android SDK item create API call error "Object not found"
body: <p>I have a problem with the Podio SDK on Android in the following scenario:</p>
  
  <p>I have uploaded an image to Podio from our server in a php script and returned the file_id to my Android app via http. The id seems to be valid, but when i try to create an item using this file_id for an image field value i get the following error messages:</p>
  
  <pre><code>E/Volley: [49051] BasicNetwork.performRequest: Unexpected response code 404 for https://api.podio.com/item/app/17418679
  
  com.podio.sdk.ApiError: {"error_parameters":{},"error_detail":null,"error_propagate":false,"request":{"url":"http:\/\/api.podio.com\/item\/app\/17418679","query_string":"","method":"POST"},"error_description":"Object not found","error":"not_found"}
  </code></pre>
  
  <p>If i do not attach the image the item create call works fine
  I used the newest version of the Podio Android SDK from Github (<a href="https://github.com/podio/podio-android" rel="nofollow noreferrer">https://github.com/podio/podio-android</a>) compiled using Android Studio 2.3 and build tools version 25.</p>
  
  <p>I already found an error where the wrong app_id was used, but fixing that still left me with the same message.</p>
  
  <p>This used to work only a few weeks ago, maybe there was change in the API? Do you have any tips on what else could cause this problem? I am using different client id / secret in the php script than in the app, could that be the reason?</p>