There are a couple of files that are common to both modules, and it doesn't matter if they get overwritten or not. The files are identical.
Also, as I've said previously, BOTH modules can be installed and run concurrently. There is NO conflict between them.
It is a somewhat pointless thing for most people to do though, but it was made this way so that I could perform tests on our own live store without having to keep uninstalling and re-installing the Austpost module while the ozpost was still being developed and tested. It gave me the ability to just enable/disable the module I wanted (or didn't) want at any given time.
A bad assumption. The error message that isn't a part of the AustPost module isn't a part of the ozpost module either. In fact I don't recognise that error message from anywhere, which means that it is either coming from a completely different module, or someone has modified the code.
Rgds
Rod




