I recently came back to Xcode to work on a new app (last used Xcode in April 2013). I'm wanting to look back at some old code, but whenever I open the projects Xcode promptly crashes. Is there some annoying issue that came along that everybody knows about except me who is out of the loop? I can make a new project, save it, and open it just fine - the problem is only projects made with older versions of Xcode. Thanks!