Hi Rod,

We used your latest ozpost version on v1.3.9, we got this error:

Unexpected error. No valid method. Using static rates.

The above error only shows up when we used Australian shipping address, but no issue on international address.

Here is my client store (on a testing sub folder, not live store):

http://www.outdoorking.com/teststore

Could you please let us know what is causing this issue?