I have created a custom UITableViewCell, but when I dequeue the cell, sometimes it throws an NSInvalidArgumentException:

[UITableViewCell nameLabel]: unrecognized selector sent to instance 0x3b4e7f0

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[UITableViewCell nameLabel]: unrecognized selector sent to instance 0x3b4e7f0'

Now, my custom UITableViewCell does have an attribute nameLabel, so I am confused why it is throwing this error. Below is the code I use to dequeue the cell:

- (UITableViewCell *)tableView:(UITableView *)tableView 
         cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    NSUInteger row = [indexPath row];
    CTMenuItemVO* key = [[[self retrieveCartItems] allKeys] objectAtIndex:row]; 
    NSNumber* quantity = [[self retrieveCartItems] objectForKey:key];
    static NSString* SectionsTableIdentifier = @"SectionsTableIdentifier2";
    OrderItemCell* cell = (OrderItemCell*)[tableView dequeueReusableCellWithIdentifier:
                            SectionsTableIdentifier];

    if (cell == nil) { 
        NSArray* topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"OrderItemCell"    
                                                                     owner:nil
                                                                   options:nil];

        for(id currentObject in topLevelObjects)
        {
            if ([currentObject isKindOfClass:[UITableViewCell class]])
            {
                cell = (OrderItemCell*) currentObject;
                break;
            }               
        }
    }

    cell.nameLabel.text = key.Name;
    cell.qtyLabel.text = [quantity stringValue];

    return cell;
}