title: error shows "[UIView release]: message sent to deallocated instance" in IOS 7
body: <p>I use Xcode 4.6 to develop application for IOS 5 to IOS 7.My application is working fine for all IOSs'. But when I run the application in IOS 7 real device, crashing the system (But not in every time). It's crashing when I logout the system and loging. </p>
  
  <p>In My application,
  - Use 3 storyboards
  01. Storyboard for loggin
  02. Storyboard for Mail module.
  03. Storyboard for Packages.</p>
  
  <p>In Mail module story board contains the UISplitView Controller. In master view contains the Logout button (cell). When I clicked it then load the Login storyboard's Login view.
  I use following code for it.</p>
  
  <pre><code>        UIStoryboard *storyboard;
  
          if ([gaiDevice isEqual:@"IPAD"]) {
              if (gaAutoLayoutEnabled) {
                  storyboard = [UIStoryboard storyboardWithName:@"Login_iPad" bundle:nil];
              }
              else{
                  storyboard = [UIStoryboard storyboardWithName:@"Login_iPad_iOS5" bundle:nil];
              }
  
          }
          else{
              if (gaAutoLayoutEnabled) {
                   storyboard = [UIStoryboard storyboardWithName:@"Login_iPhone" bundle:nil]; //Login_iPhone
              }
              else {
                   storyboard = [UIStoryboard storyboardWithName:@"Login_iPhone_iOS5" bundle:nil]; //Login_iPhone
              }
  
          }
  
          LoginVC *myLogin = [[LoginVC alloc] init];
          gaSessionKey = @"1";
          gcURLPrefix = @"http://";
          myLogin =[storyboard instantiateViewControllerWithIdentifier:@"LoginView"];
  
  
          [self presentViewController:myLogin animated:NO completion:nil];
  </code></pre>
  
  <p>My problem is, When I go Mail module's some views and click logout. It goes to loggin view. from that when I go to Mail module screen , than application is crashed. This is happen only for IOS 7 device. Why is that ?</p>
  
  <p>I cannot use NSZombie because it's come only IOS 7. IOS 7 simulator is not supported with XCode 4.6 instruments. So I cannot simulate it. Application is working fine for IOS 5,5.1,6.0 and 6.1 devices. only problem in IOS 7. Final error is "[UIView release]: message sent to deallocated instance" .I have been trying many ways since 2.5 days to sort out. :(
  How can identify that UIView ??</p>