title: Apples's Scrolling Example Crashes
body: <p>I am trying to run the <a href="http://developer.apple.com/library/ios/#samplecode/Scrolling/Introduction/Intro.html" rel="nofollow">Apple's Scrolling Sample Code</a>, but I get following Error:</p>
  
  <pre><code>Scrolling[45877:207] Unknown class ScrollingAppDelegate in Interface Builder file.
  Scrolling[45877:207] Unknown class ScrollingViewController in Interface Builder file.
  Scrolling[45877:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[&lt;UICustomObject 0x4b33330&gt; setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key viewController.'
  *** Call stack at first throw:
  (
      0   CoreFoundation                      0x00f0cbe9 __exceptionPreprocess + 185
      1   libobjc.A.dylib                     0x010615c2 objc_exception_throw + 47
      2   CoreFoundation                      0x00f0cb21 -[NSException raise] + 17
      3   Foundation                          0x000306cf _NSSetUsingKeyValueSetter + 135
      4   Foundation                          0x0003063d -[NSObject(NSKeyValueCoding) setValue:forKey:] + 285
      5   UIKit                               0x004af8d6 -[UIRuntimeOutletConnection connect] + 112
      6   CoreFoundation                      0x00e832cf -[NSArray makeObjectsPerformSelector:] + 239
      7   UIKit                               0x004ae2ed -[UINib instantiateWithOwner:options:] + 1041
      8   UIKit                               0x004b0081 -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:] + 168
      9   UIKit                               0x002ba943 -[UIApplication _loadMainNibFile] + 172
      10  UIKit                               0x002bb4ca -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 291
      11  UIKit                               0x002c5db2 -[UIApplication handleEvent:withNewEvent:] + 1533
      12  UIKit                               0x002be202 -[UIApplication sendEvent:] + 71
      13  UIKit                               0x002c3732 _UIApplicationHandleEvent + 7576
      14  GraphicsServices                    0x01842a36 PurpleEventCallback + 1550
      15  CoreFoundation                      0x00eee064 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52
      16  CoreFoundation                      0x00e4e6f7 __CFRunLoopDoSource1 + 215
      17  CoreFoundation                      0x00e4b983 __CFRunLoopRun + 979
      18  CoreFoundation                      0x00e4b240 CFRunLoopRunSpecific + 208
      19  CoreFoundation                      0x00e4b161 CFRunLoopRunInMode + 97
      20  UIKit                               0x002bafa8 -[UIApplication _run] + 636
      21  UIKit                               0x002c742e UIApplicationMain + 1160
      22  Scrolling                           0x0000279c main + 102
      23  Scrolling                           0x0000272d start + 53
  )
  terminate called after throwing an instance of 'NSException'
  </code></pre>
  
  <p>The weird thing is, that I can't find those connections in the MainWindow.xib (The only xib file). The Outlets are properly connected to the AppDelegate and MyViewController classes.</p>