i run a Magento CE Shop v1.7.0.2.
When customers trying to checkout with letters in the postal code (like netherlands) they getting: "Sorry, no quotes are available for this order at this time"
Without letters and whitespace there is no problem.
The other posts about this problem are about things with ups, fedEx etc... i dont have something active like this.
I only got multi tablerates and tablerates active. All countries allowed.
can someone explain to me where i can fix this? for the first time a temporary change on core classes would be ok till i get a reasonable solution.
I try to ask another way:
Where does magento decide which qotes available?