title: Issue with Unit Tests in Xcode 5.1 / iOS 7.1: assertion failure in BKSEventFocusManager
body: <p>Seeing the following error when running XCTest-based Logic Tests after upgrading to Xcode 5.1 - would love to know of a workaround. </p>
  
  <pre><code>2014-03-11 12:57:42.258 xctest[25605:303] deferral properties must have a 
  clientID 2014-03-11 12:57:42.258 xctest[25605:303] ***
  Assertion failure in -[BKSEventFocusManager
  deferEventsForClientWithProperties:toClientWithProperties:],
  /SourceCache/BackBoardServices_Sim/SpringBoard-2618.99.15/megatrond/BKSEventFocusManager.m:63
  &lt;unknown&gt;:0: error: -[CSAPIErrorHandlerTests testDisplayReachabilityAlert] : 
  props must have a valid clientID (  
  0   CoreFoundation      0x00b251e4 __exceptionPreprocess + 180  
  1   libobjc.A.dylib     0x007988e5 objc_exception_throw + 44    
  2   CoreFoundation      0x00b25048 +[NSException raise:format:arguments:] + 136     
  3   Foundation          0x000114de -[NSAssertionHandler
      handleFailureInMethod:object:file:lineNumber:description:] + 116    
  4   BackBoardServices   0x0197fece -[BKSEventFocusManager
      deferEventsForClientWithProperties:toClientWithProperties:] + 154   
  5   UIKit               0x07a942e1 -[UIWindow _beginKeyWindowDeferral] + 176    
  6   UIKit               0x07a940a7 -[UIWindow _makeKeyWindowIgnoringOldKeyWindow:] + 129    
  7   UIKit               0x07a9400d -[UIWindow makeKeyWindow] + 41   
  8   UIKit               0x07a943e2 -[UIWindow makeKeyAndVisible] + 91
  </code></pre>