Every creditor, consenting to an assignment, shall, within six months from the time of the first publication of the notice of appointment of the assignee, file with the assignee a distinct statement of the particular nature and amount of his claim against the debtor, which shall be supported by an affidavit of the creditor, his agent or attorney, that the statement is true, that the debt is just and that there are no credits or offsets that should be allowed against the claim, except as shown by the statement. No creditor shall take any benefit under any assignment whatever who neglects to file this statement.