Hi salsaqueen,
You don't need the Australian patch but the English patch which you can download over
here.
(You are sure you don't have an Australian game? Please have a look at the logo of the publisher. Digital Jesters=UK version, QV Software=Australian version, HIP Interactive=US version, which is the same game version as the UK version)
A crash occuring with "test" or "apply and close" in the config tool is probably due to a problem with the drivers of your video card. Installing the latest drivers should fix the problem.
If this doesn't help you, please send an email to
support@larian.com with a description of your problem. We will have a closer look into your problem.
Our apologies for the inconvenience you experience with the game.