asp smartupload and request form for jmail not working

hello,

i have a form where the user can enter some values and upload a file. After the form is sent i need the following things to be done:

upload the attached file
gather the informations from the form
build an email with jmail 3.7 and send the informations and the uploaded file to a specific mail-adress
delete the uploaded file

My problem is, that when i want to gather the informations from the form with a request.form, that i get the following errror

BinaryRead could not be called
/anfrage_ersatz_danke.asp, line 51
After using the collection Request.Form you cant call the BinaryRead.

here is the source:

<%
firma=Request.form("firma")
ansprech=Request.form("ansprech")
strasse=Request.form("strasse")
plz=Request.form("plz")
ort=Request.form("ort")
tel=Request.form("tel")
fax=Request.form("fax")
email1=Request.form("email1")
mothersteller=Request.form("mothersteller")
motnr=Request.form("motnr")
mottyp=Request.form("mottyp")
klass=Request.form("klass")
schiffsherst=Request.form("schiffsherst")
teileliste=Request.form("teileliste")
lieferbed=Request.form("lieferbed")
email="anfrage-Ersatzteile@xx.de"

msg = "Firma: " & firma
msg = msg & "Ansprechpartner: " & ansprech & vbcrlf
msg = msg & "Strasse: " & Strasse & vbcrlf
msg = msg & "Plz / Ort: " & plz & " " & ort & vbcrlf
msg = msg & "Telefon: " & telefon & vbcrlf
msg = msg & "Fax: " & fax & vbcrlf
msg = msg & "E-Mail: " & email1 & vbcrlf
msg = msg & "Motorenhersteller : " & mothersteller & vbcrlf
msg = msg & "Motorennummer: " & motnr & vbcrlf
msg = msg & "Mottyp: " & mottyp & vbcrlf
msg = msg & "Motorenhersteller : " & mothersteller & vbcrlf
msg = msg & "Klassifizierung: " & klass & vbcrlf
msg = msg & "Schiffshersteller: " & schiffsherst & vbcrlf
msg = msg & "Angefragte Teile : " & teileliste & vbcrlf
msg = msg & "Lieferbedingungen : " & lieferbed & vbcrlf
%>
<%
'  Variables
'  *********
   Dim mySmartUpload
   Dim file
   Dim intCount
   dim FileName
   intCount=0
       
'  Object creation
'  ***************
   Set mySmartUpload = Server.CreateObject("aspSmartUpload.SmartUpload")

'  Upload
'  ******
   mySmartUpload.Upload

'  Select each file
'  ****************
   For each file In mySmartUpload.Files
   '  Only if the file exist
   '  **********************
      If not file.IsMissing Then
      '  Save the files with his original names in a virtual path of the web server
      '  **************************************************************************
         file.SaveAs("/~Upload/" & file.FileName)

      '  Display the properties of the current file
      '  ******************************************
         Response.Write("Name = " & file.Name & "<BR>")
         Response.Write("Size = " & file.Size & "<BR>")
         Response.Write("FileName = " & file.FileName & "<BR>")
         Response.Write("FileExt = " & file.FileExt & "<BR>")
         Response.Write("FilePathName = " & file.FilePathName & "<BR>")
         Response.Write("ContentType = " & file.ContentType & "<BR>")
         Response.Write("ContentDisp = " & file.ContentDisp & "<BR>")
         Response.Write("TypeMIME = " & file.TypeMIME & "<BR>")
         Response.Write("SubTypeMIME = " & file.SubTypeMIME & "<BR>")
             FileName = File.FileName
         intCount = intCount + 1
      End If
   Next
   
'  Display the number of files which could be uploaded
'  ***************************************************
'   Response.Write("<BR>" & mySmartUpload.Files.Count & " files could be uploaded.<BR>")

'  Display the number of files uploaded
'  ************************************
'   Response.Write(intCount & " file(s) uploaded.<BR>")
%>
<%
 Set JMail = Server.CreateObject("JMail.SMTPMail")
 JMail.ServerAddress = "xxx.de"
 JMail.Sender = email
 JMail.Subject = "What"
 JMail.AddRecipient "info@nn.de"
 JMail.AddAttachment Server.MapPath("/~Upload/" & FileName)
 JMail.Body = msg
 JMail.Execute
 
' Call function
Call DeleteFile(Server.MapPath("/~Upload/" & FileName))
%>  
<%
Function DeleteFile(strPathToFile)
   Dim objFSO
   Set objFSO = Server.CreateObject("Scripting.FileSystemObject")

   If (objFSO.FileExists(strPathToFile)) = true Then
      objFSO.DeleteFile(strPathToFile)
   End If

   Set objFSO = Nothing
   Set JMail = Nothing

End Function

%>