AustPost saying errors in shipping estimator

[starr]

Hi Rod,

I have just discovered the same problem with my ozpost module
unexpected error (no valid methods). using ap flat rate $25

I have Zencart v 1.8 and the last ozpost module download for that version.

I realise that this maybe a stupid question but do I have to update Zencart to V1.9d before I install the latest ozpost installation?

I am reluctant to upgrade zencart because it takes me so long to sort out problems. I do plan to upgrade zencart but not today.

Everything else is working well, except the ozpost module.
My initial install on Hostgator was done using Fantastico but they only have the update for 1.9b... I see there is some problems with this and 1.9d is recommended. Not sure I can upgrade without fantastico.

My questions then will the latest version of Ozpost work on v1.8 or do I have to upgrade zencart as well?

BTW why is this problem just showing up now?

Many thanks