issue with downloading attachments from database and causing dupliacte errors

The web application I maintain is recently causing the below error looks like for IE 10 and Chrome 32.0.1700.76  

The response from the server contained duplicate headers. This problem is generally the result of a misconfigured website or proxy. Only the website or proxy administrator can fix this issue.
Error code: ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION
(chrome error) but causing similar to IE also

Below is my code and kindly help me get resolve the issue:


                With objAttachment
                    Response.Buffer = True
                    byeTemp = .GetLSCBriefingDocument(datAgendaDate)
                    Dim strAttachment As String
                    If Not IsNothing(.FileName) Then
                        strAttachment = "attachment; filename=" & .FileName & ";"
                        Response.ClearContent()
                        Response.ClearHeaders()
                        Response.BufferOutput = True

                        Response.AddHeader("Content-Disposition", strAttachment)
                        Response.AddHeader("Content-Disposition", "inline")
                        Response.AddHeader("Content-Transfer-Encoding", "binary")

                        Response.AddHeader("Content-Length", byeTemp.Length)
                        Response.ContentType = .AttachmentType
                        Response.OutputStream.Write(byeTemp, 0, byeTemp.Length)
                        Response.Flush()
                        Response.Close()
                        Response.End()
                    Else
                        JavaScriptShowMSG("LSC Briefing Document for this meeting has not been published.")
                    End If
                End With

I tried the below but no luck:
 strAttachment = "attachment; filename=" & Chr(34) & .FileName.Replace(",", "_").Replace(" ", "_") & Chr(34)
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Bob LearnedCommented:
You can't do this:

                   Response.AddHeader("Content-Disposition", strAttachment)
                   Response.AddHeader("Content-Disposition", "inline")

You can do inline or attachment, but not both.

Content-Disposition attachment vs inline
http://dotanything.wordpress.com/2008/05/30/content-disposition-attachment-vs-inline/
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