Workflow Question on Loading xoml

I have this xoml which is created dynamically using the below code

It produces a straightforward output as
<?xml version="1.0" encoding="utf-8"?><ns0:Workflow1 InitialStateName="Workflow1InitialState" x:Name="Workflow1" DynamicUpdateCondition="{x:Null}" CompletedStateName="stateActivity1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/workflow" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:ns0="clr-namespace:WorkflowConsoleApplication1;Assembly=WorkflowConsoleApplication1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null">
      <ns0:Workflow1.FinalState>
            <StateActivity x:Name="stateActivity1" />
      </ns0:Workflow1.FinalState>
      <ns0:Workflow1.StartState>
            <StateActivity x:Name="Workflow1InitialState">
                  <EventDrivenActivity x:Name="eventDrivenActivity1">
                        <HandleExternalEventActivity x:Name="handleExternalEventActivity1" EventName="HandleOperation" InterfaceType="{x:Type ns0:IOperation}" />
                        <SetStateActivity x:Name="setStateActivity1" TargetStateName="stateActivity1" />
                  </EventDrivenActivity>
            </StateActivity>
      </ns0:Workflow1.StartState>
</ns0:Workflow1>

The problem is when i try to reload the xoml and start the workflow, it fails with an error at the line
instance = workflowRuntime.CreateWorkflow(xr);

the error is Can not create workflow definition.  Input markup is invalid.

I am baffled at this point

using System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Text;
using System.Threading;
using System.Workflow.Runtime;
using System.Workflow.Runtime.Hosting;
using System.Workflow.Activities;
using System.Workflow.Runtime;
using System.Workflow.Activities;
using System.IO;
using System.Xml;
using System.Workflow.ComponentModel.Serialization;
using System.Windows.Forms;
using System.Workflow.Activities;
using System.Workflow.ComponentModel;
using System.Workflow.Runtime;
using System.Workflow.ComponentModel.Compiler;
using System.Xml;
using System.Xml.Serialization;
using System.Runtime.Serialization;
using System.Workflow.ComponentModel.Serialization;
using System.Windows.Forms;
using System.Reflection;

namespace WorkflowConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            using(WorkflowRuntime workflowRuntime = new WorkflowRuntime())
            {
                OperationsHandler _Ops = new OperationsHandler();
                ExternalDataExchangeService eds = new ExternalDataExchangeService();
                workflowRuntime.AddService(eds);
                eds.AddService(_Ops);
                workflowRuntime.StartRuntime();

                Workflow1 sl = new Workflow1();
                XmlWriter writer = XmlTextWriter.Create("d:\\MyData\\A2.xoml");
                WorkflowMarkupSerializer serializer = new WorkflowMarkupSerializer();
                serializer.Serialize(writer, sl);
                writer.Close();

                XmlReader xr = XmlReader.Create("d:\\MyData\\A2.xoml");

                serializer = new WorkflowMarkupSerializer();
                Workflow1 wf1 = (Workflow1)serializer.Deserialize(xr);

                TypeProvider typeProvider = new TypeProvider(workflowRuntime);
                workflowRuntime.AddService(typeProvider);

                WorkflowInstance instance;
                try
                {
                    instance = workflowRuntime.CreateWorkflow(xr);
                }
                catch (WorkflowValidationFailedException exp)
                {
                    StringBuilder errors = new StringBuilder();
                    foreach (ValidationError error in exp.Errors)
                    {
                        errors.AppendLine(error.ToString());
                    }
                    Console.WriteLine(errors.ToString());
                } 
                
                AutoResetEvent waitHandle = new AutoResetEvent(false);
                instance = workflowRuntime.CreateWorkflow(typeof(WorkflowConsoleApplication1.Workflow1));
                instance.Start();

                Params p = new Params(Guid.NewGuid());
                p.XML = "<xml>someStuff</xml>";

                _Ops.TriggerEvent(null,p);

                waitHandle.WaitOne();
            }
        }
    }

    public interface IParams
    {
        string XML {get;set;}
    }

    [Serializable]
    public class Params : ExternalDataEventArgs, IParams
    {
        public String _xml;
        public Params(Guid id) : base(id) { }
        #region IParams Members
        public string XML
        {
            get
            {
                return _xml;
            }
            set
            {
                _xml = value;
            }
        }

        #endregion
    }
    [ExternalDataExchange]
    public interface IOperation
    {
        object ExecuteOperation(IParams operationParams);
        event EventHandler<Params> HandleOperation;
    }

    [Serializable]
    public class OperationsHandler : IOperation
    {
        #region IOperation Members

        public event EventHandler<Params> HandleOperation
        {
            add
            {
                InternalOperation += value;
            }
            remove
            {
                InternalOperation -= value;
            }
        }
        public object ExecuteOperation(IParams operationParams)
        {
            return null;
        }

        public void TriggerEvent(object sender, Params p)
        {
            InternalOperation(sender, p);
        }
        private event EventHandler<Params> InternalOperation;

        #endregion
    }
}

using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Collections;
using System.Drawing;
using System.Reflection;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Design;
using System.Workflow.Runtime;
using System.Workflow.Activities;
using System.Workflow.Activities.Rules;

namespace WorkflowConsoleApplication1
{
    partial class Workflow1
    {
        public StateActivity StartState { get { return Workflow1InitialState; } set { Workflow1InitialState = value; } }
        public StateActivity FinalState { get { return stateActivity1; } set { stateActivity1 = value; } }
        #region Designer generated code

        /// <summary> 
        /// Required method for Designer support - do not modify 
        /// the contents of this method with the code editor.
        /// </summary>
        [System.Diagnostics.DebuggerNonUserCode]
        private void InitializeComponent()
        {
            this.CanModifyActivities = true;
            this.setStateActivity1 = new System.Workflow.Activities.SetStateActivity();
            this.handleExternalEventActivity1 = new System.Workflow.Activities.HandleExternalEventActivity();
            this.eventDrivenActivity1 = new System.Workflow.Activities.EventDrivenActivity();
            this.stateActivity1 = new System.Workflow.Activities.StateActivity();
            this.Workflow1InitialState = new System.Workflow.Activities.StateActivity();
            // 
            // setStateActivity1
            // 
            this.setStateActivity1.Name = "setStateActivity1";
            this.setStateActivity1.TargetStateName = "stateActivity1";
            // 
            // handleExternalEventActivity1
            // 
            this.handleExternalEventActivity1.EventName = "HandleOperation";
            this.handleExternalEventActivity1.InterfaceType = typeof(WorkflowConsoleApplication1.IOperation);
            this.handleExternalEventActivity1.Name = "handleExternalEventActivity1";
            // 
            // eventDrivenActivity1
            // 
            this.eventDrivenActivity1.Activities.Add(this.handleExternalEventActivity1);
            this.eventDrivenActivity1.Activities.Add(this.setStateActivity1);
            this.eventDrivenActivity1.Name = "eventDrivenActivity1";
            // 
            // stateActivity1
            // 
            this.stateActivity1.Name = "stateActivity1";
            // 
            // Workflow1InitialState
            // 
            this.Workflow1InitialState.Activities.Add(this.eventDrivenActivity1);
            this.Workflow1InitialState.Name = "Workflow1InitialState";
            // 
            // Workflow1
            // 
            this.Activities.Add(this.Workflow1InitialState);
            this.Activities.Add(this.stateActivity1);
            this.CompletedStateName = "stateActivity1";
            this.DynamicUpdateCondition = null;
            this.InitialStateName = "Workflow1InitialState";
            this.Name = "Workflow1";
            this.CanModifyActivities = false;

        }

        #endregion

        private SetStateActivity setStateActivity1;
        private HandleExternalEventActivity handleExternalEventActivity1;
        private EventDrivenActivity eventDrivenActivity1;
        private StateActivity stateActivity1;
        private StateActivity Workflow1InitialState;
    }
}
using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Collections;
using System.Drawing;
using System.Linq;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel.Serialization;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Design;
using System.Workflow.Runtime;
using System.Workflow.Activities;
using System.Workflow.Activities.Rules;

namespace WorkflowConsoleApplication1
{
    public sealed partial class Workflow1 : StateMachineWorkflowActivity
    {
        public Workflow1()
        {
            InitializeComponent();
        }
    }

}

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