Hi,
I am running 1.5.5.a
I have a fresh install of it and it works perfectly.
I have also a 1.5.5.a that is an upgrade from 1.5.1 with lots of mods of which I have not full track.

The problem is on the zone rates shipping module which I can configure and make work in the fresh install but I can not in the modded version.

When I try to checkout in the modded version, it says that there are not shipping options for the customer's country.

If I enable a different shipping module, (tied to the zones defined int the zone definitions) the shipping option is listed when checking out for the same customer.

Can someone indicate me a list of the php files involved so I can try to find which one is creating the problem?
thanks

ciao from Italy
enzo