Hello.
I have fixed the problem.
I have re-created the web .dll file, and it worked.  The only thing that 
  I can think of that was causing the problem was that I had changed the 
report builder server version, and that had some ill effects.
Tar
Aidan Diffey
                
                             
        
Comments
That could do it. Whenever you update to a new version, I recommend
rebuilding your server, webtier, and client applications to keep them all in
sync.
--
Nard Moseley
Digital Metaphors Corporation
http://www.digital-metaphors.com
Best regards,
Nard Moseley
Digital Metaphors
www.digital-metaphors.com