(1) It shall be unlawful for any license agreement for the exhibition of a motion picture at a theatre within the state to contain or be conditioned upon a provision, agreement or understanding that the exhibitor shall advance any funds prior to the exhibition of the picture as security for the performance of the license agreement or to be applied to payments under such agreement.
(2) Any provision, agreement or understanding which provides for such an advance shall be void, and any purported waiver of the prohibition in subsection (1) of section 6 [this section] of this act shall be void and unenforceable.