One-Page Checkout [Support Thread]

[Carbonless]

ZC 1.5.7c
ZCAbootstrap
OPC 2.3.9

upon clicking on checkout, I recieve the same error that Designs75 mentions in post:



I made the change to includes/classes/shipping.php per your link above, and the same error persists... I'm stummped.

Thanks to the AMAZING insight of Lat9... the issue was resolved by turning on otshipping in the admin>modules>order total>Shipping

It was off as the only "Shipping" method is Store Pickup. Once turned on, issue resolved!

THANK YOU LAT9!