title: WordPress (4.3.1) dropdown tabs not working in Dashboard
body: <p>When in WordPress (4.3.1) on my live site the dropdown  tabs at the top (Screen Option, Help, etc.) in the dashboard are not working. I did a bit of research and removed all plugins and custom jquery with the same result.
  All works fine on my local server.
  Does anyone have any ideas or where to look to make them work?
  Thanks.</p>
  
  <p>Thanks to the comments below here is a shot of the console errors:</p>
  
  <p><a href="https://i.stack.imgur.com/FZ0MW.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FZ0MW.jpg" alt="enter image description here"></a></p>