title: EPplus assembly error
body: <p>I am using asp.net 4.5 framework. I just downloaded EPPLus using NUget Package. I then used the code given at the following link.</p>
  
  <p><a href="http://epplus.codeplex.com/wikipage?title=WebapplicationExample" rel="nofollow noreferrer">http://epplus.codeplex.com/wikipage?title=WebapplicationExample</a></p>
  
  <p>And add following code on click event of a button. After clicking the button, i am getting following error.</p>
  
  <p>Could not load file or assembly 'EPPlus, Version=3.1.3.0, Culture=neutral, PublicKeyToken=ea159fdaa78159a1' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) </p>
  
  <p>Please suggest If I am making any stupid mistake.</p>
  
  <p><img src="https://i.stack.imgur.com/dPEZ1.jpg" alt="enter image description here"></p>
  
  <pre><code>DataTable table = new DataTable();
  table.Columns.Add("Dosage", typeof(int));
  table.Columns.Add("Drug", typeof(string));
  table.Columns.Add("Patient", typeof(string));
  table.Columns.Add("Date", typeof(DateTime));
  
  table.Rows.Add(25, "Indocin", "David", DateTime.Now);
  table.Rows.Add(50, "Enebrel", "Sam", DateTime.Now);
  table.Rows.Add(10, "Hydralazine", "Christoff", DateTime.Now);
  table.Rows.Add(21, "Combivent", "Janet", DateTime.Now);
  table.Rows.Add(100, "Dilantin", "Melanie", DateTime.Now);
  
  using (ExcelPackage pck = new ExcelPackage())
  {
      //Create the worksheet
      ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Demo");
  
      //Load the datatable into the sheet, starting from cell A1. Print the column names on row 1
      ws.Cells["A1"].LoadFromDataTable(table, true);
  
      //Format the header for column 1-3
      using (ExcelRange rng = ws.Cells["A1:C1"])
      {
          rng.Style.Font.Bold = true;
          rng.Style.Fill.PatternType = ExcelFillStyle.Solid;                      //Set Pattern for the background to Solid
          rng.Style.Fill.BackgroundColor.SetColor(Color.FromArgb(79, 129, 189));  //Set color to dark blue
          rng.Style.Font.Color.SetColor(Color.White);
      }
  
  
      //Write it back to the client
      Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
      Response.AddHeader("content-disposition", "attachment;  filename=ExcelDemo.xlsx");
      Response.BinaryWrite(pck.GetAsByteArray());
  }
  </code></pre>