Open Epub in iBooks

I want to open a epub file into ibooks app. I am using this code to load ePub file:

-(void)OpeniBooks
{
     NSString *applicationDocumentsDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
    NSString *storePath = [applicationDocumentsDir stringByAppendingPathComponent:@"/Downloads/Livro.epub"];

    NSURL *URL = [NSURL fileURLWithPath:storePath];
    if (URL) {
        // Initialize Document Interaction Controller
        self.documentInteractionController = [UIDocumentInteractionController interactionControllerWithURL:URL];
        // Configure Document Interaction Controller
        [self.documentInteractionController setDelegate:self];
    }
    // the file exist         
    if([[NSFileManager defaultManager] fileExistsAtPath:storePath])
    {
        NSLog(@"Exist");
    }

    if (![self.documentInteractionController presentOptionsMenuFromRect:CGRectZero inView:self.view animated:YES]) {

        UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:nil message:@"You don't have an app installed that can handle ZIP files." delegate:self cancelButtonTitle:@"Thanks!" otherButtonTitles:nil, nil];
        [alertView show];
    }
}

- (UIViewController *) documentInteractionControllerViewControllerForPreview: (UIDocumentInteractionController *) controller
{
    return self;
}


- (void)documentInteractionController:(UIDocumentInteractionController *)controller willBeginSendingToApplication:(NSString *)application {

    NSLog(@"Starting to send this puppy to %@", application);
}

- (void)documentInteractionController:(UIDocumentInteractionController *)controller didEndSendingToApplication:(NSString *)application {

    NSLog(@"We're done sending the document.");
}

but the method didEndSendingToApplication never is called and the application crash.

this appears in output :

Unknown activity items supplied: ( { "org.idpf.epub-container" = <504b0304 14000000 0000857c 3f446f61 ab2c1400 00001400 00000800 00006d69 6d657479 70656170 706c6963 6174696f 6e2f6570......

Its possible to call ibooks for loading local epubs or its not possible?

Thanks!