In the WA_ecart/eCart1_PHP.php file change lines 87 - 90:
$this->Shipping[] = new WA_eCart_Rule(urldecode("Shipping%20&%20Handling"), false, "WAEC_eCart1_ShippingHandling");
$this->Shipping[] = new WA_eCart_Rule(urldecode("Shipping%20&%20Handling%20per%20item"), true, "WAEC_eCart1_ShippingHandlingperitem");
$this->Shipping[] = new WA_eCart_Rule(urldecode("Shipping%20&%20Handling"), false, "WAEC_eCart1_ShippingHandling");
$this->Shipping[] = new WA_eCart_Rule(urldecode("Shipping%20&%20Handling%20per%20item"), true, "WAEC_eCart1_ShippingHandlingperitem");
to:
$this->Shipping[] = new WA_eCart_Rule(urldecode("Shipping%20&%20Handling"), false, "WAEC_eCart1_ShippingHandling");
$this->Shipping[] = new WA_eCart_Rule(urldecode("Shipping%20&%20Handling%20per%20item"), true, "WAEC_eCart1_ShippingHandlingperitem");