title: xcode 6.2. view controllers greyed out, locked
body: <p>I have a xcode project with buttons and other objects in it. But the objects are all greyed out in my view now. The project still compiles and shows the buttons fine. I saw posts about using auto-layout, changing size-classes, and modifying the IB. But whenever I make any of those changes, a lock icon shows on the screen and nothing changes. I can go back to an old version of my code, but I'd rather find out what will fix the issue.</p>
  
  <p>What was I doing to break it? I was just exploring through the different xcode windows and views, and don't know exactly when the viewcontroller objects became affected.</p>