Why won't this file open ?

Guys,

Why can't I open this Excel file ? It does exist, it is in the correct folder !

When my code comes to open the file, firstly I have to login to the server ? Then I get the following error . . .

'\\bls2mbr25\HPT\HPTResults.xlt' could not be found. Check the spelling of the file name, and verify that the file location is correct. If you are trying to open the file from your list of most recently used files on the File menu, make sure that the file has not been renamed, moved, or deleted.

I have posted the full text of the error below, and also my code module !

Any help please !!!
Thanks
bob


Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Runtime.InteropServices.COMException: '\\bls2mbr25\HPT\HPTResults.xlt' could not be found. Check the spelling of the file name, and verify that the file location is correct. If you are trying to open the file from your list of most recently used files on the File menu, make sure that the file has not been renamed, moved, or deleted.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[COMException (0x800a03ec): '\\bls2mbr25\HPT\HPTResults.xlt' could not be found. Check the spelling of the file name, and verify that the file location is correct.

If you are trying to open the file from your list of most recently used files on the File menu, make sure that the file has not been renamed, moved, or deleted.]
Microsoft.Office.Interop.Excel.Workbooks.Open(String Filename, Object UpdateLinks, Object ReadOnly, Object Format, Object Password, Object WriteResPassword, Object IgnoreReadOnlyRecommended, Object Origin, Object Delimiter, Object Editable, Object Notify, Object Converter, Object AddToMru, Object Local, Object CorruptLoad) +0
HPT.HPTReports.btn_excel_Click(Object sender, EventArgs e) in c:\inetpub\wwwroot\HPT\HPTReports.aspx.vb:217
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain() +1277

VB Code:

Private Sub btn_excel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_excel.Click
 
        
        'Get data into datatable.
        Dim Qid As Integer = CInt(Session("QID"))
        Dim filename As String = "\\bls2mbr25\HPT\RESULTS\" & CType(Qid, String) & " - " & CType(Session("ReportName"), String) & " RESULTS ANALYSIS.xls"
        Dim cnn As New SqlConnection("Data Source=BLS5TEST2;Initial Catalog=HPT;User Id=HPT;Password=kibby1;")
        Dim cmd As New SqlDataAdapter("SELECT * FROM vw_answers WHERE Qid = '" & Qid & "' and Staffname <> '" & User.Identity.Name & "'", cnn)
        Dim tlcmd As New SqlDataAdapter("SELECT * FROM vw_answers WHERE Qid = '" & Qid & "' and Staffname = '" & User.Identity.Name & "'", cnn)
 
 
        'Fill the dataset here.
        Dim ds As New DataSet
        cmd.Fill(ds, "TeamAnswers")
        tlcmd.Fill(ds, "LeaderAnswers")
 
        Dim RowNbr As Int32 = 0
        Dim Answers(ds.Tables(0).Rows.Count) As Object
        Dim Leader(ds.Tables(1).Rows.Count) As Object
 
        'get Teamanswers into array
        For Each Rw As DataRow In ds.Tables(0).Rows
            Answers(RowNbr) = Rw.ItemArray()
            RowNbr += 1
        Next Rw
 
        'get Leaderanswers into array
        RowNbr = 0
        For Each lRw As DataRow In ds.Tables(1).Rows
            Leader(RowNbr) = lRw.ItemArray()
            RowNbr += 1
        Next lRw
 
        'Get data into EXCEL
        Dim xl As Excel.Application
        Try
            xl = GetObject(, "Excel.Application")
        Catch ex As Exception
            xl = New Excel.Application
        End Try
 
        Dim wkbk As Excel.Workbook
        Dim wkst As Excel.Worksheet
        Dim wksttl As Excel.Worksheet
 
        xl.Visible = False
        xl.DisplayAlerts = False
 
       
        'wkbk = xl.Workbooks.Open(Server.MapPath(Request.ApplicationPath) & "\\bls2mbr25\HPT\HPT Questionnaire Results.xlt")
        wkbk = xl.Workbooks.Open("\\bls2mbr25\HPT\HPTResults.xlt")
        wkst = wkbk.Sheets("rawdata")
 
        'Export Team Answers
        Dim x As Integer
        Dim y As Integer
        Dim range As String
        For x = 0 To Answers.GetUpperBound(0)
            y = x + 2
            range = "A" & y & ":D" & y
            wkst.Range(range).Value = Answers(x)
        Next
 
        'Export TeamLeader Answers
        For x = 0 To Leader.GetUpperBound(0)
            y = x + 2
            range = "E" & y & ":G" & y
            wkst.Range(range).Value = Leader(x)
        Next
 
        'Tidy up
        Answers = Nothing
        Leader = Nothing
        ds.Dispose()
        ds = Nothing
 
        wkbk.Sheets(1).activate()
 
        wkbk.SaveAs(filename)
        xl.DisplayAlerts = True
        xl.Quit()
 
        ReleaseComObject(wkst)
        ReleaseComObject(wkbk)
        ReleaseComObject(xl)
        xl = Nothing : wkst = Nothing : wkbk = Nothing
        System.GC.Collect()
 
        'Send the user to the file
        Response.Redirect(filename)
 
    End Sub