Reading xml into a Dataset for a PDA.

I'm new to .NET and this is my first app but
I keep on getting an error I can't seem to find any help on.
The error reads :
"Could not find resource assembly"

Can anyone help me on this problem and maybe show me a solution?

This is the code :

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Data;
using System.Xml;
using System.IO;

namespace Test4
{
      /// <summary>
      /// Summary description for Form1.
      /// </summary>
      public class Form1 : System.Windows.Forms.Form
      {
            private System.Windows.Forms.ComboBox comboBox1;
            DataSet companyDS;
            string xmlFileName;
            string xsdFileName;
            private System.Windows.Forms.TextBox txtbox;
            public Form1()
            {
                  //
                  // Required for Windows Form Designer support
                  //
                  InitializeComponent();
                  companyDS = new DataSet();

                  // Set file names and create file streams
                  xmlFileName = "\\My Documents\\Company.xml";
                  xsdFileName = "\\My Documents\\Company.xsd";
                  FileStream FsXML = new FileStream(xmlFileName,FileMode.Open);
                  FileStream FsXSD = new FileStream(xsdFileName,FileMode.Open);

                  try
                  {      
                  // Load the data into the DataSet.
                        XmlTextReader xtrXML = new XmlTextReader(FsXML);
                        companyDS.ReadXml(xtrXML);
                        xtrXML.Close();                                      <- I get an error here
                        FsXML.Close();

                  // Load the schema into the DataSet.
                  
                        XmlTextReader xtrXSD = new XmlTextReader(FsXSD);
                        companyDS.ReadXmlSchema(xtrXSD);
                        xtrXSD.Close();
                        FsXSD.Close();
                  
                  // Get a DataTable to conveniently use for binding.
                  DataTable dt = companyDS.Tables["record"];

                  //Bind the list box to state abreviations.
                  comboBox1.DataSource = dt;
                  comboBox1.DisplayMember = "Mines";
         
                  //Bind the text box for entering data.
                  txtbox.DataBindings.Add(new Binding("Text",dt,"MineID"));
                  //
                  // TODO: Add any constructor code after InitializeComponent call
                  //
                  }
                  catch (Exception e)
                  {
                        MessageBox.Show(e.Message,"Exception");
                  }
            }
            /// <summary>
            /// Clean up any resources being used.
            /// </summary>
            protected override void Dispose( bool disposing )
            {
                  base.Dispose( disposing );
            }
            #region Windows Form Designer generated code
            /// <summary>
            /// Required method for Designer support - do not modify
            /// the contents of this method with the code editor.
            /// </summary>
            private void InitializeComponent()
            {
                  this.comboBox1 = new System.Windows.Forms.ComboBox();
                  this.txtbox = new System.Windows.Forms.TextBox();
                  //
                  // comboBox1
                  //
                  this.comboBox1.Location = new System.Drawing.Point(8, 40);
                  this.comboBox1.Size = new System.Drawing.Size(176, 21);
                  //
                  // txtbox
                  //
                  this.txtbox.Location = new System.Drawing.Point(40, 120);
                  this.txtbox.Size = new System.Drawing.Size(112, 20);
                  this.txtbox.Text = "textBox1";
                  //
                  // Form1
                  //
                  this.ClientSize = new System.Drawing.Size(194, 280);
                  this.Controls.Add(this.txtbox);
                  this.Controls.Add(this.comboBox1);
                  this.Text = "READ XML";

            }
            #endregion

            /// <summary>
            /// The main entry point for the application.
            /// </summary>

            static void Main()
            {
                  Application.Run(new Form1());
            }
      }
}

Many Thanks