title: 'No Valid Kits Found' in Qt Creator
body: <p>I am installing Qt 5.5 on a new machine, and I ran into this exact same issue last time I set up my environment, but I completely forgot how I fixed it and have been working on it for hours.  I've looked at questions on SO <a href="https://stackoverflow.com/questions/26499404/qtcreator-no-valid-kits-found">here</a>, and a few other places, but none of them solve the issue for me.</p>
  
  <p>I am running on OS X, and the fact that I ran into this problem the last time I installed it makes me think this is a surprisingly common issue for just trying to start a new project.</p>
  
  <p>Anyone solved this problem on Mac before?</p>