Hi Terry,
It's the aspulpoader, not the ajax one ...
http://www.aspuploader.com/demo.html
I tried most of the demos on that page and got the same result ... file appear to be uploading but instead returns an error message:
Server Side Exceptyion. Failed to uplaod xyz.jpg, Debug Inofmration: aspuplaoder: session expired
With multiple file uploads, the error appears separately for each file.
Hope this helps,
Matt