title: Button in ContentView causes crash in MonoTouch runtime. Bug in Monotouch 4.0?
body: <p>My application worked fine in MT 3.0. Now when I upgraded. I am seeing errors when a button is in a ContentView. Crashes happen when the button is clicked. Code:</p>
  
  <pre><code>public override UITableViewCell GetCell(UITableView tableView, NSIndexPath indexPa
      float width = tableView.Bounds.Width - 70;
  
      var cell = tableView.DequeueReusableCell(kCellIdentifier);
      //if (cell == null)
      //{
      cell = new UITableViewCell(UITableViewCellStyle.Subtitle, kCellIdentifier);
      // }
  
      var behavior = tvc.behaviors.ElementAt(indexPath.Row);
      cell.TextLabel.Text = behavior.Name;
      cell.TextLabel.Font = UIFont.BoldSystemFontOfSize(22f);
      cell.DetailTextLabel.Text = behavior.Definition;
      var view = UIButton.FromType(UIButtonType.Custom);
      view.Tag = indexPath.Row;
      view.SetImage(UIImage.FromBundle("Images/plus.png"), UIControlState.Normal);
      view.Frame = new RectangleF(width - 50, 10, 50, 50);
  
      view.TouchUpInside += IncrementBehavior;
  
      var label = new UILabel(new RectangleF(width - 80, 10, 50, 50));
      label.Text = behavior.CurrentCount.ToString();
      label.BackgroundColor = UIColor.Clear;
      label.Font = UIFont.BoldSystemFontOfSize(24f);
      cell.ContentView.AddSubview(view);
      cell.ContentView.AddSubview(label);
      //cell.BackgroundColor = UIColor.Clear;)
  
      return cell;
  }
  
  void IncrementBehavior(object sender, EventArgs e) {
      var button = (UIButton)sender;
      var tag = button.Tag;
      var behavior = tvc.behaviors[tag];
  
      var indexpath = NSIndexPath.FromRowSection(tag, 0);
      var newBehavior = Repository.GetBehavior(behavior.Id);
      newBehavior.CurrentCount++;
      Repository.Update(newBehavior);
      tvc.behaviors[tag] = newBehavior;
  
  
      tvc.TableView.ReloadRows(new[] { indexpath }, UITableViewRowAnimation.None);
  
  }
  </code></pre>
  
  <p>I am getting these Errors interchangeably:</p>
  
  <pre><code>Name: NSInvalidArgumentException Reason: -[__NSCFSet BridgeSelector]: unrecognized selector sent to instance 0x5c3c570
  </code></pre>
  
  <p>AND</p>
  
  <pre><code>No constructor found for MonoTouch.UIKit.UIControlEventProxy::.ctor(System.IntPtr)
  </code></pre>