title: iOS - resetting NSMutable Array causes crash
body: <p>I have an NSMutableArray I'm trying to reload after an async call. The first time it loads like this: </p>
  
  <pre><code>self.sessionProcList = [NSMutableArray arrayWithArray:[result records]];
  </code></pre>
  
  <p>After the user does some interaction, the same line will be reached to reload the NSMutableArray. This causes the crash</p>
  
  <p><strong>Header file has:</strong> </p>
  
  <pre><code>@interface...
  NSMutableArray *sessionProcList;
  ... }
  
  @property (nonatomic, retain) NSMutableArray *sessionProcList;
  </code></pre>