Dynamic DB pdf forms issue

[gchq]

Hi there

VB.NET Web app

Using a 'viewing page' I can pull a pdf file from the DB on the Development W/Station, but on the server it displays a blank page... As images are also stored in the same DB and relative directory, and are no problem, the issue can't be down to a path!

Here is the code

Imports System.Data
Partial Class Document_Viewer
    Inherits System.Web.UI.Page
    Private strSQL As String
    Private vData As DataConn
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        
        Dim vID As String = Request.QueryString("Document_ID")
        If Not IsNumeric(vID) Then
            Exit Sub
        End If

        strSQL = "SELECT Document_PDF FROM Documents WHERE Document_ID = " & vID
        vData = New DataConn
        Dim vDocument As Byte()
        Try
            vDocument = vData.ExecuteScalar(CommandType.Text, strSQL)
        Catch ex As Exception
            EmailError(ex.Message, "23")
            Exit Sub
        End Try
        Response.ClearHeaders()
        Response.AddHeader("content-disposition", "inline=" & vDocument.ToString())
        Response.AddHeader("content-length", vDocument.ToString())
        Response.ContentType = ("application/pdf")
        Response.BinaryWrite(vDocument)

    End Sub

The server is W2K as is the workstation and both are running .NET 2.0 Framework.

Any ideas where to look?

Thanks