title: Wierd NSArray Error
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/7684611/what-is-nsarrayi-and-nsarraym-how-to-convert-to-nsarray">What is __NSArrayI and __NSArrayM? How to convert to NSArray?</a>  </p>
  </blockquote>
  
  
  
  <p>I am getting the error below</p>
  
  <p>2012-06-06 15:53:19.509 NavApp[5462:707] <strong>* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*</strong> -[__NSArrayM insertObject:atIndex:]: object cannot be nil'
  *** First throw call stack:
  (0x353b788f 0x3775e259 0x3530c1d7 0xba3e5 0xc128b 0x32e2db95 0x32e87d85 0x32e4a251 0x32e49fa1 0x32e49cbb 0x32e49a2f 0x32e00aab 0x32e063d5 0x3220cc2f 0x34246ee7 0x3538a2ad 0x3530d4a5 0x3530d36d 0x36fa9439 0x32e19cd5 0x106a71 0xb8c70)
  terminate called throwing an exception(lldb) </p>
  
  <p>I think it's odd because it says "__NSArrayM"... Any idea what this means?</p>