title: In-App-Purchase invalid product id only on release version
body: <p>I released a new version of an app yesterday which added in app purchases.  We did testing with a test account in sandboxed mode and everything worked correctly, however once we download the app from the app store the <code>SKProductsRequestDelegate</code> method:</p>
  
  <pre><code>(void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response
  </code></pre>
  
  <p>returns invalid product id's instead of valid ones.  I'm baffled because I've had these types of problems before but only when trying to get them to work in debug mode, never after the app has been released from the app store.  I've double checked everything on the list here <a href="http://troybrant.net/blog/2010/01/invalid-product-ids/" rel="nofollow noreferrer">http://troybrant.net/blog/2010/01/invalid-product-ids/</a> and none of those are the problem.  </p>
  
  <p>Here's another thread which is exactly my problem but no solution here: <a href="https://stackoverflow.com/q/8371184/2766755">iOS In App Purchase - &quot;Invalid Product ID&quot; in release, NOT development version</a></p>