On line 34 of AppDelegate.cs, the following exception is thrown: "System.Exception: Selector invoked from objective-c on a managed object of type Empty1.SendDataRowCell (0xCFE4900) that has been GC'ed" However, the custom table view cell is not instantiated or referenced anywhere.

AppDelegate.cs

using System;
using System.Collections.Generic;
using System.Linq;

using MonoTouch.Foundation;
using MonoTouch.UIKit;

namespace Empty1
{
  // The UIApplicationDelegate for the application. This class is responsible for launching the 
	// User Interface of the application, as well as listening (and optionally responding) to 
	// application events from iOS.
	[Register("AppDelegate")]
	public partial class AppDelegate : UIApplicationDelegate
	{
		// class-level declarations
		UIWindow window;
		UIViewController controller;

		//
		// This method is invoked when the application has loaded and is ready to run. In this 
		// method you should instantiate the window, load the UI into it and then make the window
		// visible.
		//
		// You have 17 seconds to return from this method, or iOS will terminate your application.
		//
		public override bool FinishedLaunching(UIApplication app, NSDictionary options)
		{
			// create a new window instance based on the screen size
			window = new UIWindow(UIScreen.MainScreen.Bounds);

			// If you have defined a view, add it here:
			controller = new TrackingViewController();
			window.AddSubview(controller.View);

			// make the window visible
			window.MakeKeyAndVisible();

			return true;
		}
	}
}

SendDataRowCell.cs

// This file has been autogenerated from parsing an Objective-C header file added in Xcode.

using System;

using MonoTouch.Foundation;
using MonoTouch.UIKit;

namespace Empty1
{
  [Register("SendDataRowCell")]
	public partial class SendDataRowCell : UITableViewCell
	{
	}
}

SendDataRowCell.designer.cs

// WARNING
//
// This file has been generated automatically by Xamarin Studio to store outlets and
// actions made in the Xcode designer. If it is removed, they will be lost.
// Manual changes to this file may not be handled correctly.
//
using MonoTouch.Foundation;

namespace Empty1
{
  partial class SendDataRowCell
	{
		[Outlet]
		public MonoTouch.UIKit.UILabel lblPercent { get; private set; }

		[Outlet]
		public MonoTouch.UIKit.UIProgressView vwProgress { get; private set; }
		
		void ReleaseDesignerOutlets ()
		{
			if (lblPercent != null) {
				lblPercent.Dispose ();
				lblPercent = null;
			}

			if (vwProgress != null) {
				vwProgress.Dispose ();
				vwProgress = null;
			}
		}
	}
}

TrackingView.xib

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TrackingViewController.cs

using System;
using System.Drawing;

using MonoTouch.Foundation;
using MonoTouch.UIKit;

namespace Empty1
{
  public partial class TrackingViewController : UIViewController
	{
		private SendDataRowCell cell;

		public TrackingViewController () 
			: base ("TrackingView", null)
		{
		}

		public override void DidReceiveMemoryWarning ()
		{
			// Releases the view if it doesn't have a superview.
			base.DidReceiveMemoryWarning ();
			
			// Release any cached data, images, etc that aren't in use.
		}
		
		public override void ViewDidLoad ()
		{
			base.ViewDidLoad ();
		}
	}
}

TrackingViewController.designer.cs

// WARNING
//
// This file has been generated automatically by Xamarin Studio to store outlets and
// actions made in the Xcode designer. If it is removed, they will be lost.
// Manual changes to this file may not be handled correctly.
//
using MonoTouch.Foundation;

namespace Empty1
{
  [Register ("TrackingViewController")]
	partial class TrackingViewController
	{
		[Outlet]
		MonoTouch.UIKit.UITableView vwTable { get; set; }

		void ReleaseDesignerOutlets ()
		{
			if (vwTable != null) {
				vwTable.Dispose ();
				vwTable = null;
			}
		}
	}
}