title: My sandboxed app was running fine in 10.8 but in 10.9 it seems that user defaults .plist is not saved at all
body: <p>Sandboxed app was running fine in 10.8 but in 10.9 it seems that user defaults. plist is not saved at all. The location of plist is:</p>
  
  <pre><code>~/Library/Containers/com.example.myapp/Data/Library/Preferences/com.example.myapp.plist
  </code></pre>
  
  <p>and if I delete it, it will not be created again. In 10.8 this was working.</p>
  
  <p>Has anyone seen this before or can anyone suggest a solution?</p>