title: Assertion failure in [UITableView dequeueReusableCellWithIdentifier:forIndexPath:]
body: <p>I have a <code>UIViewController</code> embedded in a navigation controller, embedded in a page view controller. In my <code>cellForRowAtIndexPath</code>, I'm getting <code>2015-07-06 11:23:24.525 MyApp[3574:617281] *** Assertion failure in -[UITableView dequeueReusableCellWithIdentifier:forIndexPath:], /SourceCache/UIKit/UIKit-3347.44.2/UITableView.m:6245</code> at <code>var cell: CellOne =</code>.</p>
  
  <pre><code>func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -&gt; UITableViewCell {
  
          let result: UITableViewCell
  
          if (segmentedControl.selectedSegmentIndex == 0) {
  
              // Getting error here...
              var cell:CellOne = tableView.dequeueReusableCellWithIdentifier("CellOne", forIndexPath: indexPath) as! CellOne 
  
              cell.customLabel.text = array[indexPath.row]
  
              result = cell
  
          } else {
  
              var cell = tableView.dequeueReusableCellWithIdentifier("CellTwo", forIndexPath: indexPath) as! CellTwo
  
              cell.customLabelTwo.text = otherArray[indexPath.row]
  
              result = cell
          }
  
          return result
  
      }
  </code></pre>