(1) A licensee shall have no liability for any act or practice done or omitted in conformity with (a) any rule or regulation of the commissioner, or (b) any rule, regulation, interpretation or approval of any other state or federal agency or any opinion of the Attorney General, notwithstanding that after the act or omission has occurred the rule, regulation, interpretation, approval or opinion is amended, rescinded, or determined by judicial or other authority to be invalid for any reason.
(2) A licensee, acting in conformity with a written interpretation or approval by an official or employee of any state or federal agency or department, shall be presumed to have acted in accordance with applicable law, notwithstanding that after that act has occurred, the interpretation or approval is amended, rescinded, or determined by judicial or other authority to be incorrect or invalid for any reason.