title: Weird Behavior: Message Sent to deallocated instance
body: <p>In my view I have a button, which is hooked to this method:</p>
  
  <pre><code>-(IBAction)showStore:(id)sender
  {
      storeSinglePlayer *ssp = [[storeSinglePlayer alloc] init];
      ssp.imageH = self.imageURLH;
      ssp.imageV = self.imageURLV;
      CATransition* transition = [CATransition animation];
      transition.duration = 0.5;
      transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
      transition.type = kCATransitionPush; 
      transition.subtype = kCATransitionFromTop;
      [self.navigationController.view.layer addAnimation:transition forKey:nil];
      [self.navigationController pushViewController:ssp animated:NO];
   }
  </code></pre>
  
  <p>When I click this button, it shows me the 'store single player' view controller. Also the 'store single player'  view controller has a back button which is hooked to the following method:</p>
  
  <pre><code>-(IBAction)didPressBack:(id)sender
  {
      CATransition* transition = [CATransition animation];
      transition.duration = 0.5;
      transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
      transition.type = kCATransitionPush; 
      transition.subtype = kCATransitionFromBottom;
      [self.navigationController.view.layer addAnimation:transition forKey:nil];
      [self.navigationController popViewControllerAnimated:NO];
  
  }
  </code></pre>
  
  <p>Clicking the back button also does get me back to my previous view.</p>
  
  <p>But now here is the weird problem. If I repeat this 10 times, i.e. Click the button to show 'storeSinglePlayer' and then click the back button on 'storeSinglePlayer', I get the error: </p>
  
  <pre><code>[storeSinglePlayer respondsToSelector:]: message sent to deallocated instance 0xe5f6160
  </code></pre>
  
  <p>And, this not just only on my multiple tries, it just randomly crashes. It would work some time and some times it won't.</p>
  
  <p><strong>I have ARC enabled.</strong></p>
  
  <p>Can't get what's wrong with just this simple code. Read a lot of questions on stack overflow, but none solve my problem.</p>
  
  <p>EDIT: Stack Trace</p>
  
  <pre><code>2012-08-11 11:55:56.353 Magic Buzz[2088:707] (
      0   Magic Buzz                          0x000c7e19 -[gameOverScreen showStore:] + 700
      1   CoreFoundation                      0x3769c3fd -[NSObject performSelector:withObject:withObject:] + 52
      2   UIKit                               0x30891e07 -[UIApplication sendAction:to:from:forEvent:] + 62
      3   UIKit                               0x30891dc3 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 30
      4   UIKit                               0x30891da1 -[UIControl sendAction:to:forEvent:] + 44
      5   UIKit                               0x30891b11 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 492
      6   UIKit                               0x30892449 -[UIControl touchesEnded:withEvent:] + 476
      7   UIKit                               0x3089092b -[UIWindow _sendTouchesForEvent:] + 318
      8   UIKit                               0x30890319 -[UIWindow sendEvent:] + 380
      9   UIKit                               0x30876695 -[UIApplication sendEvent:] + 356
      10  UIKit                               0x30875f3b _UIApplicationHandleEvent + 5826
      11  GraphicsServices                    0x3789222b PurpleEventCallback + 882
      12  CoreFoundation                      0x37716523 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 38
      13  CoreFoundation                      0x377164c5 __CFRunLoopDoSource1 + 140
      14  CoreFoundation                      0x37715313 __CFRunLoopRun + 1370
      15  CoreFoundation                      0x376984a5 CFRunLoopRunSpecific + 300
      16  CoreFoundation                      0x3769836d CFRunLoopRunInMode + 104
      17  GraphicsServices                    0x37891439 GSEventRunModal + 136
      18  UIKit                               0x308a4cd5 UIApplicationMain + 1080
      19  Magic Buzz                          0x000b094d main + 96
      20  Magic Buzz                          0x000b08e8 start + 40
  )
  2012-08-11 11:55:56.554 Magic Buzz[2088:707] *** -[storeSinglePlayer respondsToSelector:]: message sent to deallocated instance 0xf6cde30
  </code></pre>