(1) The penalty provisions of this act shall not apply to an act or omission occurring before December 1, 1977 except that a late filing fee shall not be due or payable for an act or omission occurring before May 16, 1978 provided the act or omission is corrected before May 16, 1978. If a late filing fee has been paid before that date, it shall be returned by the person who collected the late filing fee upon written request of the person who paid the late filing fee.

    (2) A penalty or late filing fee imposed pursuant to section 24, 34, or 35 shall neither be enforceable nor due or payable as a result of a person making expenditures of $200.00 or more as a contribution to a ballot question committee before October 15, 1981. If a person has paid a late filing fee as a result of an expenditure of $200.00 or more as a contribution to a ballot question committee before July 1, 1981, the late filing fee imposed pursuant to section 24, 34, or 35 shall be returned by the person who collected the late filing fee upon written request of the person who paid it.

    (3) Section 35 shall not take effect until June 30, 1978.