title: Android Studio not changing API version
body: <p>Whenever I go and try to click to change the API version, it stays the same and will not switch to the one I choose. Do I need to add something for it to change?   </p>
  
  <p>Here is a picture of my IDE:</p>
  
  <p><a href="https://i.stack.imgur.com/8xJOO.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8xJOO.png" alt="enter image description here"></a></p>
  
  <p>As you can see, it is on API 15.  </p>
  
  <p>I have several different API's listed but it will not change to them if I click on one.</p>