No amendment, modification or waiver in respect of this Agreement (including the Exhibits and Seller Disclosure Schedule) shall be effective unless it shall be in writing and signed by both parties hereto; provided that the consent of the Financing Sources shall be required to amend the rights of any Financing Source under Section 15.01 , Section 15.02 , this Section 15.05 , Section 15.13, Section 15.14 , Section 15.15 and Section 15.16 .