@@ -130,10 +130,12 @@ if($do_show == 'showentries'){
                     ));
         $table->setup();
 
         if($table->get_sql_sort()) {
             $sort = $table->get_sql_sort();
+            $sort = str_replace('timemodified', 'c.timemodified', $sort); //we are using two tables
+            $sort = str_replace('lastname', 'u.lastname', $sort); //we are using two tables
         }else {
             $sort = '';
         }
 
         list($where, $params) = $table->get_sql_where();