title: Cannot install Xcode 10 Network Link Conditioner in macOS Mojave
body: <p>I'm using the final version of Xcode 10 on macOS Mojave beta 11. I downloaded the Additional Tools for Xcode 10 package <a href="https://developer.apple.com/download/more/?=for%20Xcode" rel="noreferrer">from Apple's website</a>.</p>
  
  <p>When I try to install the Network Link Conditioner Preference Pane, Settings.app displays this error:</p>
  
  <blockquote>
    <p>“Network Link Conditioner” preferences is installed with macOS and can’t be replaced.</p>
  </blockquote>
  
  <p>However, the preference pane is <strong>not visible</strong> inside Settings.app. I even checked under <code>/Library/PreferencePanes</code> - it's not there.</p>
  
  <p><a href="https://i.stack.imgur.com/65MCG.png" rel="noreferrer"><img src="https://i.stack.imgur.com/65MCG.png" alt="enter image description here"></a></p>
  
  <p>How can I get around this?</p>