title: Why does NSMutableDictionary writeToFile return no?
body: <p>I have the following, where path is the documents folder. myArray is an NSMutableDictionary. I'm running this in the simulator.</p>
  
  <pre><code>BOOL success = [self.myArray writeToFile:path atomically:YES];
  </code></pre>
  
  <p>The above always returns no.  I can see in the target folder that nothing was written.</p>
  
  <p>The path looks like this:</p>
  
  <pre><code>/Users/username/Library/Application Support/iPhone Simulator/7.1/Applications/79D8982F-9995-4831-83B9-E2749F2261CD/Documents/
  </code></pre>
  
  <p>Any ideas what I'm doing wrong?</p>