No amendment, modification, termination, or waiver of any provision of this Agreement, and no consent to any departure by any Pledgor from the terms and conditions hereof, shall in any event be effective unless the same shall be in writing and signed by the party or parties against whom enforcement of such amendment, modification, termination, or waiver is sought. Any such waiver or consent shall be effective only in the specific instance and for the specific purpose for which it was given.