Failure or delay by either party to insist on the strict performance of any covenant, term, provision or condition hereunder, or to exercise any option herein contained, or to pursue any claim or right arising herefrom, shall not constitute or be construed as a waiver of such covenant, term, provision, condition, option, claim or right (except that if a party proceeds to Closing, notwithstanding the failure of a condition to its obligation to close, then such condition shall be deemed waived by virtue of the Closing). Any waiver by either party shall be effective only if in a writing delivered to the other party hereto and setting forth, with specificity, the covenant, term, provision or condition so waived. Any such waiver shall not constitute or be construed as a continuing waiver of any subsequent default.