title: Append a newline to an NSString
body: <p>I have this:</p>
  
  <pre><code>if (soapResults != nil) {
      soapResults = [soapResults stringByAppendingString:@"\n"];
      }
  </code></pre>
  
  <p>But I get a warning:</p>
  
  <p>Assignment from distinct Objective-C type on build.</p>
  
  <p>When I run it on device I get:</p>
  
  <pre><code>Program received signal: "EXC_BAD_ACCESS".
  </code></pre>
  
  <p>from gdb.</p>
  
  <p>Any ideas how to append a newline to an NSString without getting a warning or error?</p>
  
  <p>Any help appreciated // :)</p>