title: File write issue
body: <p>I have the following code.  It does not generate an error but my file does not get updated either.</p>
  
  <pre><code>if([cDate  compare:Today] == NSOrderedAscending){
  
       NSLog(@"%@", [NSString stringWithFormat:@"%@, 0", Today]);
       if(![[NSString stringWithFormat:@"%@, 0", Today] writeToFile:filePath atomically:TRUE])
              NSLog(@"writeToFile failed");  
  }
  </code></pre>