On CakePHP(tm) v 0.2.9, save function return fail on app/controllers/credit_memos_controller.php

Need Help
1

Dear All,
According to I copy the old project of CakePHP™ v 0.2.9 to reinstall again and all of function is working fine but there’s a problem Credit_memo is not working
as my checking.
when save the Credit_memo, it will call to
app/controllers/credit_memos_controller.php
and on this condition is return fail
if ($this->CreditMemo->save($creditMemo))
else “COME TO FAIL”

so you have any way to check problem?