Terminating app due to uncaught exception 'NSInvalidArgumentException' , reason: '-[NSNull _fastCStringContents:]: unrecognized selector
<p>I created a new <code>tabbed application</code> in <code>Xcode</code>. I am receiving the following error every time I try to type any letters or numbers into a text field. </p>

<p>I noticed that this error started when I checked the box for <code>"is initial view controller"</code></p>

<p>When i have the <code>ViewController</code> itself set as the <code>initial</code> <code>ViewController</code> it will not throw the error. However, when I make a <code>NavigationController</code> the <code>initial</code> <code>ViewController</code> it will throw this error. </p>

<p>Error received:</p>

<pre><code>Reminder[46707:4165261] -[NSNull _fastCStringContents:]: unrecognized selector sent to instance 0x10d087af0
2016-03-23 00:48:19.830 Cable tech Reminder[46707:4165261] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSNull _fastCStringContents:]: unrecognized selector sent to instance 0x10d087af0'
</code></pre>