Upload Problem (Split From PDF)

I try to use freeaspupload to upload files with two page. one is upload.asp

<form method="POST" action="upload02.asp" enctype="multipart/form-data">
<input type="file" name="attach1" size="20"><br>
<textarea rows="5" cols="20" name="note"></textarea>
<p><input type="submit" value="send" name="B1"></p>
</form>

the other is upload02.asp

<!-- #include file="freeASPUpload.asp" -->
<%
uploadsDirVar= server.MapPath("files")
Set Upload = New FreeASPUpload
Upload.Save(uploadsDirVar)
%>


but it fails,what's the problem?