change line 114 to:
if ($WAGLOBAL_Shipping_Enabled == 1 && (("USPS"=="USPS")&&(isset($_SESSION["WA_Store_Cart_USPS_Quote"]))&&(floatval($_SESSION["WA_Store_Cart_USPS_Quote"]) != 0))) {
change line 123 to:
if ($WAGLOBAL_Shipping_Enabled == 1 && (("FedEx"=="FedEx")&&(isset($_SESSION["WA_Store_Cart_FedEx_Quote"]))&&(floatval($_SESSION["WA_Store_Cart_FedEx_Quote"]) != 0))) {
and line 132 to:
if ($WAGLOBAL_Shipping_Enabled == 1 && (("UPS"=="UPS")&&(isset($_SESSION["WA_Store_Cart_UPS_Quote"]))&&(floatval($_SESSION["WA_Store_Cart_UPS_Quote"]) != 0))) {