--- E:/xampp/htdocs/justtranslate/sites/all/modules/ldap_integration_orig/ldap_integration/LDAPInterface.php	Thu Aug 23 08:05:42 2007
+++ E:/xampp/htdocs/justtranslate/sites/all/modules/ldap_integration/ldap_integration/LDAPInterface.php	Mon Nov 05 20:00:08 2007
@@ -211,7 +211,9 @@
       if ($cur_val == '') {
         unset($attributes[$key]);
         $old_value = $this->retrieveAttribute($dn, $key);
-        ldap_mod_del($this->connection, $dn, array($key => $old_value));
+        if ($old_value != null) {
+          ldap_mod_del($this->connection, $dn, array($key => $old_value));
+        }
       }
       if (is_array ($cur_val)) {
         foreach ($cur_val as $mv_key => $mv_cur_val) {