On top of the page, just below the <body> tag add:
<%=WAEC_ShippingIncrement()%>
<br>
<%=WAEC_ShippingBaseRate()%>
What values do they have? You may actually need to change the syntax if you have recently updated your eCart version.... that might be the problem. We changed the way rules are referred to. Try dragging and dropping them from bindings to see the new sytnax.