Restriktioner ifb. med aspSmartUpload

Hvorfor virker nedenstående ikke? Når jeg uploader filtype <> ".jpg" eller filstørrelse > 102400 byte - så drøner det lige igennem med succes i stedet for at give mig en fejlbesked som forventet.

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<HTML>
<BODY BGCOLOR="white">

<%
  On Error Resume Next

'  Object creation
'  ***************
  Set mySmartUpload = Server.CreateObject("aspSmartUpload.SmartUpload")

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

'  Get variables
'  *********
  medie = mySmartUpload.Form("MyMedie")
  id = mySmartUpload.Form("MyId")
  fuldsti = mySmartUpload.Form("MyFuldsti")

'  Only allow jpg-files
'  ***************************
  mySmartUpload.AllowedFilesList = "jpg"

'  Only allow files smaller than 102400 bytes
'  *****************************************
  mySmartUpload.MaxFileSize = 102400

  if Err Then
  Response.Write("<b>Wrong selection : </b>" & Err.description)
  else

'  SaveAs
'  ****************************************************************************
  mySmartUpload.Files.Item(1).SaveAs (fuldsti)

'  Redirect til dd.asp
'  ************************************
  link = "dd.asp?m=" & medie & "&id=" & id
  response.redirect (link)


  end if
%>
</BODY>
</HTML>