Scroll view not showing horizontal indicator

gistfile1.m

//init product controller replace view with new view and product controller
    ProductScrollView *mvc = [[ProductScrollView alloc] init];
    
    // set frame of scrollview
    mvc.scrollView.frame = CGRectMake(0, 125, firstView.bounds.size.width, (firstView.bounds.size.height-125));
    //mvc.scrollView.bounds = firstView.bounds;
    [firstView addSubview:mvc.scrollView];
    [firstView release];

ProductScrollView.h

@interface ProductScrollView : ContentController <UIScrollViewDelegate> {
    IBOutlet UIScrollView *scrollView;
    Vehicle *sharedVehicle;
    VehiclePicker *sharedPicker;
    NSMutableArray *productArray;
    NSMutableArray *viewControllers;
    BOOL arrayPopulated;
}

@property (nonatomic, retain) UIScrollView *scrollView;
@property (nonatomic, retain) Vehicle *sharedVehicle;
@property (nonatomic, retain) VehiclePicker *sharedPicker;
@property (nonatomic, retain) NSMutableArray *productArray;
@property (nonatomic, retain) NSMutableArray *viewControllers;

-(void)buildProducts;

@end

ProductScrollView.m

@interface ContentController (PrivateMethods) 
-(void) loadScrollViewWithPage:(int)page;
-(void)scrollViewDidScroll:(UIScrollView *)sender;
@end

@implementation ProductScrollView

@synthesize scrollView, sharedPicker, sharedVehicle, productArray, viewControllers;

-(id)init{
    [super init];
    //Post notification to default center for asynchronous call finished
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reloadTable) name:@"getHitch" object:nil];
    if(scrollView == nil){
        scrollView = [[UIScrollView alloc] init];
    }
    self.sharedPicker = [VehiclePicker sharedPicker];
    self.sharedVehicle = [Vehicle sharedVehicle];
    if (picUrls == nil) {
        picUrls = [NSMutableDictionary new];
    }
    arrayPopulated = NO;
    //Call data method pass current data and populate dataArray
    [self.sharedPicker getHitch:[self.sharedVehicle vchYear]:[self.sharedVehicle vchMake]:[self.sharedVehicle vchModel]:[self.sharedVehicle vchStyle]];
    
    //Initialize internal dataArray with data set
    if ([self.productArray count] == 0) {
        self.productArray = [NSMutableArray arrayWithArray:[self.sharedPicker dataArray]];
    }

    [self buildProducts];
    return self;
}

-(void)buildProducts{
    NSMutableArray *controllers = [[NSMutableArray alloc] init];
    for (unsigned i=([self.productArray count]); i > 0; i--) {
        [controllers insertObject:[NSNull null] atIndex:0];
    }
    self.viewControllers = controllers;
    [controllers release];
    
    // a page is the width of the scroll view
    scrollView.pagingEnabled = YES;
    scrollView.contentSize = CGSizeMake(scrollView.frame.size.width * [self.productArray count], scrollView.frame.size.height);
    scrollView.indicatorStyle = UIScrollViewIndicatorStyleBlack;
    scrollView.scrollsToTop = NO;
    scrollView.showsHorizontalScrollIndicator = YES;
    scrollView.delegate = self;
    
    [self loadScrollViewWithPage:0];
    [self loadScrollViewWithPage:1];
}

- (UIView *)view
{
    return self.scrollView;
}

- (void)dealloc
{
    [viewControllers release];
    [scrollView release];
    [super dealloc];
}

- (void)loadScrollViewWithPage:(int)page
{
    if (page < 0)
        return;
    if (page >= [self.productArray count])
        return;
    
    // replace the placeholder if necessary
    ProductViewController *controller = [viewControllers objectAtIndex:page];
    Product *currProd = [self.productArray objectAtIndex:page];
    if ((NSNull *)controller == [NSNull null])
    {
        controller = [[ProductViewController alloc] initWithPageNumber:page:currProd];
        [currProd release];
        [viewControllers replaceObjectAtIndex:page withObject:controller];
        [controller release];
    }
    
    // add the controller's view to the scroll view
    if (controller.view.superview == nil)
    {
        CGRect frame = scrollView.frame;
        frame.origin.x = frame.size.width * page;
        frame.origin.y = 0;
        controller.view.frame = frame;
        [scrollView addSubview:controller.view];
    }
}

- (void)scrollViewDidScroll:(UIScrollView *)sender
{	
    // Switch the indicator when more than 50% of the previous/next page is visible
    CGFloat pageWidth = scrollView.frame.size.width;
    int page = floor((scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1;
    
    // load the visible page and the page on either side of it (to avoid flashes when the user starts scrolling)
    [self loadScrollViewWithPage:page - 1];
    [self loadScrollViewWithPage:page];
    [self loadScrollViewWithPage:page + 1];
    
    // A possible optimization would be to unload the views+controllers which are no longer visible
}

-(void)reloadTable
{
    self.productArray = [[NSMutableArray alloc] initWithArray:sharedPicker.dataArray];
    arrayPopulated = YES;
    [self buildProducts];
}

ProductViewController.h

@interface ProductViewController : UIViewController {
    int pageNumber;
    Product *intProd;
    UIPopoverController *popController;
}

-(id)initWithPageNumber:(int)page:(Product *)prod;

-(IBAction)zoom:(id)sender;

-(IBAction)orderNow:(id)sender;

ProductViewController.m

@implementation ProductViewController

-(id)initWithPageNumber:(int)page :(Product *)prod{
    if (self) {
        pageNumber = page;
        ProductView *prodView = (ProductView *)self.view;
        [prodView setProduct:prod];
        intProd = prod;
    }
    return self;
}

-(void)zoom:(id)sender{
    ProductView *prodView = (ProductView *)self.view; //Reference to view
    
    //create close button
    UIBarButtonItem *closeButton = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(closePopup)] autorelease];
    
    //image from the product
    UIImageView *imageView = [[UIImageView alloc] initWithImage:[[prodView prodImage] backgroundImageForState:UIControlStateNormal]];
    imageView.contentMode = UIViewContentModeScaleAspectFit;
    imageView.contentScaleFactor = .8;
    
    //view Controller for image in popup
    UIViewController *imageViewController = [[UIViewController new] autorelease];
    [imageViewController setTitle:[prodView.titleLabel text]]; //button title
    imageViewController.navigationItem.leftBarButtonItem = closeButton; //add button to controller
    imageViewController.contentSizeForViewInPopover = CGSizeMake(imageView.image.size.width, imageView.image.size.height);
    
    //add image to view controller
    [imageViewController.view addSubview:imageView];
    [imageView release];
    
    //create nav controller for button
    UINavigationController *nc = [[[UINavigationController alloc] initWithRootViewController:imageViewController] autorelease];
    
    //create popup controller init with nav controller
    popController = [[UIPopoverController alloc] initWithContentViewController:nc];

    //make visible or dismiss and release mem
    if (![popController isPopoverVisible]) {
    [popController presentPopoverFromRect:CGRectMake(0, 0, 0, 0) inView:self.view.superview permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

    }else{
     [popController dismissPopoverAnimated:YES];
     [popController release];
    }
}

-(void)orderNow:(id)sender{
    
}


-(void)closePopup{
    [popController dismissPopoverAnimated:YES];
    [popController release];
}

- (void)dealloc
{
    if ([popController isPopoverVisible]) {
        [popController dismissPopoverAnimated:YES];
        [popController release];
    }
    [super dealloc];
}

- (void)didReceiveMemoryWarning
{
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
    
    // Release any cached data, images, etc that aren't in use.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
	return YES;
}