title: Can't seem to get rid of key value coding-compliant error
body: <p>This is the error i'm getting when i try and show a view controller modally inside my app:</p>
  
  <pre><code>*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[&lt;KVPasscodeViewController 0x8b815a0&gt; setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key instructionLabel.'
  *** Call stack at first throw:
  (
      0   CoreFoundation                      0x011185a9 __exceptionPreprocess + 185
      1   libobjc.A.dylib                     0x0126c313 objc_exception_throw + 44
      2   CoreFoundation                      0x011184e1 -[NSException raise] + 17
      3   Foundation                          0x00aea677 _NSSetUsingKeyValueSetter + 135
      4   Foundation                          0x00aea5e5 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 285
      5   UIKit                               0x0056630c -[UIRuntimeOutletConnection connect] + 112
      6   CoreFoundation                      0x0108e8cf -[NSArray makeObjectsPerformSelector:] + 239
      7   UIKit                               0x00564d23 -[UINib instantiateWithOwner:options:] + 1041
      8   UIKit                               0x00566ab7 -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:] + 168
      9   UIKit                               0x0041c628 -[UIViewController _loadViewFromNibNamed:bundle:] + 70
      10  UIKit                               0x0041a134 -[UIViewController loadView] + 120
      11  UIKit                               0x0041a00e -[UIViewController view] + 56
      12  UIKit                               0x00418482 -[UIViewController contentScrollView] + 42
      13  UIKit                               0x00428f25 -[UINavigationController _computeAndApplyScrollContentInsetDeltaForViewController:] + 48
      14  UIKit                               0x00427555 -[UINavigationController _layoutViewController:] + 43
      15  UIKit                               0x00428870 -[UINavigationController _startTransition:fromViewController:toViewController:] + 524
      16  UIKit                               0x0042332a -[UINavigationController _startDeferredTransitionIfNeeded] + 266
      17  UIKit                               0x0053e2e9 -[UILayoutContainerView layoutSubviews] + 226
      18  QuartzCore                          0x002a6a5a -[CALayer layoutSublayers] + 181
      19  QuartzCore                          0x002a8ddc CALayerLayoutIfNeeded + 220
      20  QuartzCore                          0x002a8ed0 -[CALayer layoutIfNeeded] + 111
      21  UIKit                               0x0041b58a -[UIViewController window:willAnimateRotationToInterfaceOrientation:duration:] + 587
      22  UIKit                               0x0039255f -[UIWindow _setRotatableClient:toOrientation:updateStatusBar:duration:force:] + 4347
      23  UIKit                               0x00619619 -[UIWindowController transition:fromViewController:toViewController:target:didEndSelector:] + 1381
      24  UIKit                               0x0041e65d -[UIViewController presentModalViewController:withTransition:] + 3478
      25  DearMe                              0x00011ca1 -[NotificationViewController addPasscode] + 273
      26  UIKit                               0x0036a4fd -[UIApplication sendAction:to:from:forEvent:] + 119
      27  UIKit                               0x003fa799 -[UIControl sendAction:to:forEvent:] + 67
      28  UIKit                               0x003fcc2b -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527
      29  UIKit                               0x003fb7d8 -[UIControl touchesEnded:withEvent:] + 458
      30  UIKit                               0x0038eded -[UIWindow _sendTouchesForEvent:] + 567
      31  UIKit                               0x0036fc37 -[UIApplication sendEvent:] + 447
      32  UIKit                               0x00374f2e _UIApplicationHandleEvent + 7576
      33  GraphicsServices                    0x015f2992 PurpleEventCallback + 1550
      34  CoreFoundation                      0x010f9944 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52
      35  CoreFoundation                      0x01059cf7 __CFRunLoopDoSource1 + 215
      36  CoreFoundation                      0x01056f83 __CFRunLoopRun + 979
      37  CoreFoundation                      0x01056840 CFRunLoopRunSpecific + 208
      38  CoreFoundation                      0x01056761 CFRunLoopRunInMode + 97
      39  GraphicsServices                    0x015f11c4 GSEventRunModal + 217
      40  GraphicsServices                    0x015f1289 GSEventRun + 115
      41  UIKit                               0x00378c93 UIApplicationMain + 1160
      42  DearMe                              0x000029df main + 127
      43  DearMe                              0x00002955 start + 53
      44  ???                                 0x00000001 0x0 + 1
  )
  terminate called after throwing an instance of 'NSException'
  </code></pre>
  
  <p>Any ideas about why this might be caused?</p>
  
  <p>EDIT: The code which gives the error:</p>
  
  <pre><code>KVPasscodeViewController *passcodeController = [[KVPasscodeViewController alloc] init];
      passcodeController.delegate = self;
      UINavigationController *passcodeNavigationController = [[UINavigationController alloc] initWithRootViewController:passcodeController];
      [self.navigationController presentModalViewController:passcodeNavigationController animated:YES];
      [passcodeNavigationController release];
      [passcodeController release];
  </code></pre>