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>Global symbol &quot;%Config&quot; requires explicit package name at DADA/perllib/MIME/Parser.pm line 1682, &lt;DATA&gt; line 27.
Compilation failed in require at /DADA/MailingList/Archives.pm line 960, &lt;DATA&gt; line 27.
</pre>