private function upgrade_init()
{
$_arr_extRow = get_loaded_extensions();
$_num_errCount = 0;
foreach ($this->obj_ajax->type["ext"] as $_key => $_value) {
if (!in_array($_key, $_arr_extRow)) {
$_num_errCount++;
}
}
if ($_num_errCount > 0) {
$this->obj_ajax->halt_alert("x030418");
}
}