title: Xcode Build Issue
body: <p>I've been having some trouble with Xcode. Every time I launch my application, it opens in the simulator and then immediately closes. Xcode says it build successfully and there are no errors.</p>
  
  <p>This happened when I added a timer to my application, however I have now reverted to the previous save where there is no mention of this timer and I *know it was working then, but it still happens the same way.</p>
  
  <p>Does anyone else get this?</p>