title: Strange new iOS 7 errors: receiver from DB / ForceShrinkPersistentStore_NoLock
body: <p>Good day.</p>
  
  <p>I have a project that uses a lot of network connections with SSL. This project runs fine and without errors on iOS 5 and 6. But with new iOS 7 i keep getting these two errors:</p>
  
  <pre><code>ERROR: unable to get the receiver data from the DB
  
  ForceShrinkPersistentStore_NoLock -delete- We do not have a BLOB or TEXT column type.  Instead, we have 5.
  </code></pre>
  
  <p>They are not connected in any way and i did keep getting first one for few weeks, then later i got this second one too.</p>
  
  <p>They are received on my application start, at that point i send few HTTP POST's and process received data. I cannot catch where do these errors come from.</p>
  
  <p>I could find them if i could understand them. Anyone know what do they mean or on what cases one can cause them?</p>