Works on iPad Simulator but crashes on iPad - objective-c

Question

Hi I am trying to develop a new app on the ipad. I am using a spitTableView and adding a ModalPresentationPage to the view. This works perfectly on the xcode iPad sim but crashes on my iPad. just so you know I am using xcode 5BATA and running IOS 5 on my iPad.
here is my code
DetailViewController.h
#import <UIKit/UIKit.h>
#interface DetailViewController : UIViewController <UISplitViewControllerDelegate>{
}
-(IBAction)loadView:(id)sender;
#property (strong, nonatomic) id detailItem;
#property (strong, nonatomic) IBOutlet UILabel *detailDescriptionLabel;
#property (strong, nonatomic) IBOutlet UIToolbar *toolbar;
#end
DetailViewController.m
#import "DetailViewController.h"
#import "ModalViewController.h"
#import "RootViewController.h"
#interface DetailViewController ()
#property (strong, nonatomic) UIPopoverController *popoverController;
- (void)configureView;
#end
#implementation DetailViewController
#synthesize detailItem = _detailItem;
#synthesize detailDescriptionLabel = _detailDescriptionLabel;
#synthesize toolbar = _toolbar;
#synthesize popoverController = _myPopoverController;
-(IBAction)loadView:(id)sender{
ModalViewController *mvc = [[ModalViewController alloc]initWithNibName:#"modalViewController"bundle:nil];
mvc.modalPresentationStyle = UIModalPresentationPageSheet;
mvc.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentModalViewController:mvc animated:YES];
}
- (id)initWithCoder:(NSCoder *)coder
{
self = [super initWithCoder:coder];
if (self) {
}
return self;
}
#pragma mark - Managing the detail item
- (void)setDetailItem:(id)newDetailItem
{
if (_detailItem != newDetailItem) {
_detailItem = newDetailItem;
// Update the view.
[self configureView];
}
if (self.popoverController != nil) {
[self.popoverController dismissPopoverAnimated:YES];
}
}
- (void)configureView
{
// Update the user interface for the detail item.
if (self.detailItem) {
self.detailDescriptionLabel.text = [self.detailItem description];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self configureView];
self.splitViewController.delegate = self;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return YES;
}
#pragma mark - Split view
- (void)splitViewController:(UISplitViewController *)svc willHideViewController:(UIViewController *)aViewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController: (UIPopoverController *)pc
{
barButtonItem.title = #"Master";
NSMutableArray *items = [[self.toolbar items] mutableCopy];
[items insertObject:barButtonItem atIndex:0];
[self.toolbar setItems:items animated:YES];
self.popoverController = pc;
}
- (void)splitViewController:(UISplitViewController *)svc willShowViewController:(UIViewController *)aViewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem
{
// Called when the view is shown again in the split view, invalidating the button and popover controller.
NSMutableArray *items = [[self.toolbar items] mutableCopy];
[items removeObjectAtIndex:0];
[self.toolbar setItems:items animated:YES];
self.popoverController = nil;
}
#end

Answer 1

Parts not under NDA :-
You are leaking items in both the split view delegate methods.
Are you sure the XIB name is modalViewController? There could a problem of it being case sensitive on the device.