An ASP.Net generted KML file - how to properly open it on Android

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I am working on a web application that builds a KML file using a list of coordinates and is supposed to display them on Google maps when you click a button. When I'm testing it on desktop it works, as it brings up google earth with no problem. However, when I try to test it on an android device, I get "This community map can not be displayed due to errors". Funny thing is, is that I navigated to google's KML samples page, and I was able to open them up without incident. I added this to my web.config file:

<staticContent>
      <mimeMap fileExtension=".kml" mimeType="application/vnd.google-earth.kml+xml" />
      <mimeMap fileExtension=".kmz" mimeType="application/vnd.google-earth.kmz" />
    </staticContent>

This is the code that generates the KML file:

Public Sub BuildKML()
        Dim latList As Generic.List(Of String) = Session("latList")
        Dim longList As Generic.List(Of String) = Session("longList")

        My.Response.Clear()
        My.Response.ContentType = "application/vnd.google-earth.kml+xml"
         My.Response.AddHeader("Content-Disposition", "attachment; filename=OrderMap.kml")

        'uncomment following line to view raw xml
        'My.Response.ContentType = "plain/text"
        My.Response.ContentEncoding = System.Text.Encoding.UTF8
        Dim stream As New System.IO.MemoryStream
        Dim XMLwrite As New XmlTextWriter(stream, System.Text.Encoding.UTF8)
        XMLwrite.Formatting = Formatting.Indented
        XMLwrite.Indentation = 3

        XMLwrite.WriteStartDocument()
        XMLwrite.WriteWhitespace(Environment.NewLine)

        XMLwrite.WriteStartElement("kml")
        XMLwrite.WriteAttributeString("xmlns", "http://www.opengis.net/kml/2.2")
        XMLwrite.WriteAttributeString("xmlns:gx", "http://www.google.com/kml/ext/2.2")
        XMLwrite.WriteWhitespace(Environment.NewLine)
        XMLwrite.WriteStartElement("Folder")
        XMLwrite.WriteWhitespace(Environment.NewLine)
        For i As Integer = 0 To latList.Count - 1
            XMLwrite.WriteStartElement("Placemark")
            XMLwrite.WriteWhitespace(Environment.NewLine)
            XMLwrite.WriteElementString("name", "Point" & i.ToString)
            XMLwrite.WriteWhitespace(Environment.NewLine)
            XMLwrite.WriteElementString("description", "This is a point in the order")
            XMLwrite.WriteWhitespace(Environment.NewLine)
            Dim longitude As String = longList(i)
            Dim latitude As String = latList(i)

            XMLwrite.WriteStartElement("Point")
            XMLwrite.WriteWhitespace(Environment.NewLine)

            XMLwrite.WriteElementString("coordinates", longitude & "," & latitude & ",0")
            XMLwrite.WriteWhitespace(Environment.NewLine)
            XMLwrite.WriteEndElement()
            XMLwrite.WriteWhitespace(Environment.NewLine)
            XMLwrite.WriteEndElement()

        Next
        XMLwrite.WriteWhitespace(Environment.NewLine)
        XMLwrite.WriteEndElement()
        XMLwrite.WriteWhitespace(Environment.NewLine)
        XMLwrite.WriteEndDocument()

        XMLwrite.Flush()
        Dim reader As IO.StreamReader
        stream.Position = 0
        reader = New IO.StreamReader(stream)
        Dim bytes() As Byte = System.Text.Encoding.UTF8.GetBytes(reader.ReadToEnd())
        My.Response.BinaryWrite(bytes)
        My.Response.End()
    End Sub

So, what exactly am I doing wrong here?