Program Error (Server Error 500)

<h1>Program Error (Server Error 500)</h1>
                  <hr />
             <p>
              <em>
              More information about this error may be available in the 
              server error log and/or program error log. 
              </em>
             </p>
             <hr />
               <pre>couldn't tie /usr/home/web/users/a0009655/html/__dada_files-DO_NOT_DELETE/.dada_files/.tmp/mj- for reading: Inappropriate file type or format; If your server recently upgraded software or moved 
			your lists to a different server, you may need to restore your list CAPTCHA. Visit http://robwalker.net/cgi-bin/dada/mail.cgi?f=restore_lists  at mail.cgi line 9939
</pre>