title: xcode 5 crashing after update to yosemite developer preview
body: <p>I have updated today my iMac to yosemite developer preview. Everything is working fine except my xcode 5.0. If i open a project in xcode 5.0 and then try to view the storyboard it crash. I  reinstall it after deleting the old one but no use. It's still crashing. </p>
  
  <p>While storyboard working fine on xcode 5.1.1 but i am facing some issue there like i am increasing the size of my tabbar it's size is creasing perfectly on iPhone build but not on iPad build. </p>
  
  <p>can any body help me in either case.</p>