--- lib/setup.php
+++ lib/setup.php
@@ -159,6 +159,8 @@ global $HTTPSPAGEREQUIRED;
         echo '</td></tr></table>';
         echo '</body></html>';
 
+        error_log('ADODB Error: '.$db->ErrorMsg());
+
         if (!empty($CFG->emailconnectionerrorsto)) {
             mail($CFG->emailconnectionerrorsto, 
                  'WARNING: Database connection error: '.$CFG->wwwroot,