title: Swift EXC_BAD_INSTRUCTION
body: <p>I try to code a game (i use this tutorial <a href="https://www.youtube.com/watch?v=LkYpoRj-7hA" rel="nofollow">https://www.youtube.com/watch?v=LkYpoRj-7hA</a> im new in Swift).
  Thats my Code so far:</p>
  
  <pre><code>import UIKit    
  class ViewController: UIViewController {
  
      //Image View
      @IBOutlet var ticTac_A01: UIImageView = nil
      @IBOutlet var ticTac_A02: UIImageView = nil
      @IBOutlet var ticTac_A03: UIImageView = nil        
      @IBOutlet var ticTac_B01: UIImageView = nil
      @IBOutlet var ticTac_B02: UIImageView = nil
      @IBOutlet var ticTac_B03: UIImageView = nil        
      @IBOutlet var ticTac_C01: UIImageView = nil
      @IBOutlet var ticTac_C02: UIImageView = nil
      @IBOutlet var ticTac_C03: UIImageView = nil
  
      //Buttons
      @IBOutlet var ticTacBtn_A01: UIButton = nil
      @IBOutlet var ticTacBtn_A02: UIButton = nil
      @IBOutlet var ticTacBtn_A03: UIButton = nil    
      @IBOutlet var ticTacBtn_B01: UIButton = nil
      @IBOutlet var ticTacBtn_B02: UIButton = nil
      @IBOutlet var ticTacBtn_B03: UIButton = nil        
      @IBOutlet var ticTacBtn_C01: UIButton = nil
      @IBOutlet var ticTacBtn_C02: UIButton = nil
      @IBOutlet var ticTacBtn_C03: UIButton = nil        
  
      @IBOutlet  var resetBtn: UIButton = nil
      @IBOutlet  var userMessage: UILabel = nil
  
      var plays = Dictionary&lt;Int, Int&gt;()
      var done = false;
      var aiDeciding = false;
  
      @IBAction func UIButtonClicked(sender : UIButton){
          userMessage.hidden = true;
  
          if !plays[sender.tag]   &amp;&amp; !aiDeciding &amp;&amp; !done {
              setImageForSpot(sender.tag, player:1)
          }            
          checkForWin()
          aiTurn()
      }
  
      func setImageForSpot(spot:Int, player:Int){
          var playerMark = player == 1 ?  "x" : "o"
          plays[spot] = player
  
          switch spot {
  
          case 1:
              ticTac_A01.image = UIImage(named: playerMark)
  
          case 2:
              ticTac_A02.image = UIImage(named: playerMark)
  
          case 3:
              ticTac_A03.image = UIImage(named: playerMark)
  
          case 4:
              ticTac_B01.image = UIImage(named: playerMark)
  
          case 5:
              ticTac_B02.image = UIImage(named: playerMark)
  
          case 6:
              ticTac_B03.image = UIImage(named: playerMark)
  
          case 7:
              ticTac_C01.image = UIImage(named: playerMark)
  
          case 8:
              ticTac_C02.image = UIImage(named: playerMark)
  
          case 9:
              ticTac_C03.image = UIImage(named: playerMark)
  
          default:ticTac_B02.image = UIImage(named: playerMark)
          }            
      }
  
      func checkForWin(){}
      func aiTurn(){}        
  
      override func viewDidLoad() {
          super.viewDidLoad()
          // Do any additional setup after loading the view, typically from a nib.
      }
  
      override func didReceiveMemoryWarning() {
          super.didReceiveMemoryWarning()
          // Dispose of any resources that can be recreated.
      }
  }
  </code></pre>
  
  <p>First i i get the „Thread 1: signal SIGABRT“ with this Output:</p>
  
  <pre><code>2014-07-21 10:26:21.709 Swift-Tac-Toe[3264:107207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[&lt;_TtC13Swift_Tac_Toe14ViewController 0x7f8160ca0f00&gt; setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key ticTac01.'
  *** First throw call stack:
  (
      0   CoreFoundation                      0x00000001010a3055 __exceptionPreprocess + 165
      1   libobjc.A.dylib                     0x0000000102b5da1c objc_exception_throw + 45
      2   CoreFoundation                      0x00000001010a2c99 -[NSException raise] + 9
      3   Foundation                          0x00000001014b67a3 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 259
      4   CoreFoundation                      0x0000000100fed950 -[NSArray makeObjectsPerformSelector:] + 224
      5   UIKit                               0x0000000101bdb58d -[UINib instantiateWithOwner:options:] + 1506
      6   UIKit                               0x0000000101a42898 -[UIViewController _loadViewFromNibNamed:bundle:] + 242
      7   UIKit                               0x0000000101a42f49 -[UIViewController loadView] + 109
      8   UIKit                               0x0000000101a431ba -[UIViewController loadViewIfRequired] + 75
      9   UIKit                               0x0000000101a4364f -[UIViewController view] + 27
      10  UIKit                               0x0000000101964d79 -[UIWindow addRootViewControllerViewIfPossible] + 58
      11  UIKit                               0x0000000101965112 -[UIWindow _setHidden:forced:] + 276
      12  UIKit                               0x0000000101971e70 -[UIWindow makeKeyAndVisible] + 42
      13  UIKit                               0x000000010191cc31 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 2673
      14  UIKit                               0x000000010191f5cc -[UIApplication _runWithMainScene:transitionContext:completion:] + 1222
      15  UIKit                               0x000000010191e5ac -[UIApplication workspaceDidEndTransaction:] + 19
      16  FrontBoardServices                  0x0000000104357263 __31-[FBSSerialQueue performAsync:]_block_invoke + 16
      17  CoreFoundation                      0x0000000100fd909c __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12
      18  CoreFoundation                      0x0000000100fce805 __CFRunLoopDoBlocks + 341
      19  CoreFoundation                      0x0000000100fce5c5 __CFRunLoopRun + 2389
      20  CoreFoundation                      0x0000000100fcda06 CFRunLoopRunSpecific + 470
      21  UIKit                               0x000000010191dfc2 -[UIApplication _run] + 413
      22  UIKit                               0x0000000101920cf8 UIApplicationMain + 1282
      23  Swift-Tac-Toe                       0x0000000100c224fd top_level_code + 77
      24  Swift-Tac-Toe                       0x0000000100c2253a main + 42
      25  libdyld.dylib                       0x00000001030ce145 start + 1
      26  ???                                 0x0000000000000001 0x0 + 1
  )
  libc++abi.dylib: terminating with uncaught exception of type NSException
  (lldb)
  </code></pre>
  
  <p>After Debug > Continue i get <strong>Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)</strong>.</p>
  
  <p>and thats it. </p>
  
  <p>Anyone can help me here?</p>