Also, ensure you have both the module _and_ the postage methods you want enabled (eg. international shipping / local shipping). If neither is selected you will get nothing.
If you are still having problems after checking all of the above, let me know. I will hopefully get a chance to test with 1.4.4 this week. With all these new versions my test matrix has blown out considerably (even though none of the core functionality has apparently changed

As for the version shipped with 1.4.4, I know it doesn't work, that version has nothing to do with me other than my code was taken and hacked up by someone who had no idea how Australia Post works. The fact Daniel refuses to remove the butchered version he created (and has never worked) is completely beyond me and a constant source of frustration... but Daniel knows best!