Try using the latest ecommerce release:
http://www.silverstripe.com/assets/rc/ecommerce-v0.5.2-rc1.tar.gz
Also see http://open.silverstripe.com/ticket/2383 for the fix.
line 131 - 135 of ecommerce\templates\includes\OrderInformation?.ss
close the parenthesis
<% _t("SHIPPINGDETAILS","Shipping Details") %>