title: Core Data object deletion crashes app
body: <p>I've tried reverting way back in my source code to try and figure out what's causing a serious issue.</p>
  
  <p>When I delete a <code>NSManagedObjects</code> from Core Data my app crashes with the following suggestion: </p>
  
  <pre><code>CoreData`_nameForEntityDescription:
  </code></pre>
  
  <p>Note that I see the error one of the <code>NSManagedObject</code>s, but not for another <code>NSManagedObject</code>s as well.</p>
  
  <p>I'm using MagicalRecord to take of my Core Data needs, but I am not suspecting this to be the issue. At this point, I very stumped at what the issue could be.</p>
  
  <p>Are there any Core Data experts who might be able to give me any hints as to what the issue may be?</p>
  
  <p>I'm also seeing the exact same issue with _nameForEntityDescription when I try to grab a set of NSManagedObjects for an object (through it's relationship):</p>
  
  <pre><code>NSSet* delSet = [NSSet setWithSet:contact.contactEmails];
  </code></pre>
  
  <p>So it seems like something is corrupt with the NSManagedObject model, but I've looked through everything I have for it and I cannot see what it would be :(</p>