swift - why do i get "Must translate autoresizing mask into constraints to have _setHostsLayoutEngine:YES" in xcode 6 beta

Question

I have the following code in a swift UITableViewController, but i get a "Must translate autoresizing mask into constraints to have _setHostsLayoutEngine:YES exception at the 2nd line. I didnt change any settings in the interface builder (so Autolayout and size classes are both checked).

override func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell? {
    let cell:TodoItemCell = tableView.dequeueReusableCellWithIdentifier("TodoItemCell", forIndexPath: indexPath) as TodoItemCell
    let row = indexPath.row
    cell.titleLabel.text  = self.todoItems![row].title
    self.callback!(row)
    // Configure the cell...

    return cell
}

What am i doing wrong?

Answer 1

Not sure how much this helps, but I see the same error if I try to place a cell directly in a UIView rather than in a table. This worked fine with Xcode 5 so I suspect it is a bug with XCode6/ios8. In the mean time, debug into that method and look at your tableView. Make sure it actually has an instance of the cell you are trying to retrieve.

Update: Filed a bug report with Apple and I can confirm that this is an ios8 issue. Unfortunately it is still there as of beta-5, hopefully they will have it fixed before the final release.