title: Mac OS X Energy Saver mode does not open or function
body: <p>I'm running Mac OS X 10.7.5 on a MacBook Pro. Recently, my Energy Saver mode has stopped functioning, and I can no longer open the Energy Saver Configuration Pane. When I click it, an Alert Dialog pops up with the message:</p>
  
  <p><code>Preferences Error</code></p>
  
  <p><code>Could not load Energy Saver preference pane</code>.</p>
  
  <p>I have attempted to reinstall the latest system update, and deleted </p>
  
  <p><code>/Library/Preferences/com.apple.systempreferences.plist</code></p>
  
  <p>and</p>
  
  <p><code>/Library/Caches/com.apple.systempreferences</code></p>
  
  <p>However the problem has not resolved itself. How can I fix this?</p>