knx-hdinstall was not included on 3.4. And knx-templates.0.39.tgz is not in /usr/local/lib, like it should be so knioppix-installer doesn't want to work.

You can download -knx-templates.0.39.tgz to your ramdisk. Extract it, and run the knoppix-installer in that folder by cd'ing there and launching with as root with ./knoppix-installer.

Or you can wait for some cuistom versions of 3.4, like the one I'm working on. I've added knx-hdinstall to it alreasdy, and fixed the knx-templates.0.39.tgz so that knoppix-installer works without any tinkering. My iso should be available for download in just a few days. It's called Overclockix 3.4.