title: C# App.config dont work on some systems
body: <p>In my program I save the font an some other data in the App.config file. But some users have problems with saving.</p>
  
  <p>What could be a reason for that?</p>
  
  <p>Example for saving:</p>
  
  <pre><code>PawnStar.Properties.Settings.Default.timerTime = (int)this.slTime.Value;
  PawnStar.Properties.Settings.Default.Save();
  </code></pre>