title: 'NSInvalidArgumentException', reason: '-[__NSCFString _isDecompressing]: unrecognized selector
body: <p>I have this error going on in Xcode:</p>
  
  <pre><code>Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString _isDecompressing]: unrecognized selector sent to instance 0x71863b0'
  </code></pre>
  
  <p>I have quite a bit of code and classes so I don't know what would need to be posted to start looking at this issue. If someone could give me some direction on how to start fixing this, it would be much appreciated. p.s. if there is anything else that needs to be posted tell me and I'll edit.</p>