UICollectionView's cellForItemAtIndexPath is not being called

Only my second time using UICollectionView's and perhaps I have bitten off more than I can chew but nevertheless: I am implementing a UICollectionView (myCollectionView) that uses custom UICollectionViewCell's that I have subclassed. The subclassed cells (FullReceiptCell) contain UITableView's and are the size of the viewcontroller. I am trying to allow for horizontal scrolling between the FullReceiptCells. The subclassed UICollectionViewController that contains myCollectionView is being pushed on to a nav controller stack. Currently, myCollectionView loas and horizontal scrolling is enabled. However, no cells are visible. I have confirmed that ``` - (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section ``` has run and is returning an integer greater than 0. I have also confirmed that myCollectionView's delegate and datasource are properly set in IB to the subclassed UICollectionViewController. The method where the cells are to be loaded: ``` - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath ``` is not being called. Here is where I push the UICollectionViewController and my viewDidLoad method within that controller (NOTE: initWithBill is an override of the normal initializer): In the prior ViewControllers .m file: ``` FullReceiptViewController *test = [[FullReceiptViewController alloc] initWithBill:currentBill]; test.title = @"Review"; [self.navigationController pushViewController:test animated:YES]; ``` In FullReceiptViewController.m: ``` - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view from its nib. [self.myCollectionView registerClass:[FullReceiptCell class] forCellWithReuseIdentifier:@"FullReceiptCellIdentifier"]; self.myCollectionView.pagingEnabled = YES; // Setup flowlayout self.myCollectionViewFlowLayout = [[UICollectionViewFlowLayout alloc] init]; [self.myCollectionViewFlowLayout setItemSize:CGSizeMake(320, 548)]; [self.myCollectionViewFlowLayout setSectionInset:UIEdgeInsetsMake(0, 0, 0, 0)]; [self.myCollectionViewFlowLayout setScrollDirection:UICollectionViewScrollDirectionHorizontal]; self.myCollectionViewFlowLayout.minimumLineSpacing = 0; self.myCollectionViewFlowLayout.minimumInteritemSpacing = 0; [self.myCollectionView setCollectionViewLayout:myCollectionViewFlowLayout]; //testing to see if the collection view is loading self.myCollectionView.backgroundColor = [UIColor colorWithWhite:0.25f alpha:1.0f]; ``` Any clue as to why it is not being called?