AUSPOST help please - urgent

[oavs]

Hi,

Every now and then I am getting this error without any prices. has anyone have a solution to this please? It does this even if I enter the postcode . Dropdown for the states are also there.
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AusPOST Parcel Post (ERROR: The delivery rate for this option cannot be determined at this time
If you prefer to use this option as your shipping method, please contact the store owner.)
==========================
AusPOST Express Post Parcel (ERROR: The delivery rate for this option cannot be determined at this time
If you prefer to use this option as your shipping method, please contact the store owner.)
-----------------------------------------

[oavs]

I think I have found the solution NOT mentioned in the other posts.

If the product do not have weight =0 then error comes up ..duh

I like to know how to change the horrible error message. must be coming from AU post when they wrote the script back in 1876 :-)