If you have had no problems with the old installer then I would give that a try again it will still install the system even with the new version of Knoppix although I'm not sure if it is included but you could just boot from an old version and copy the file somewhere if it is not included and then use it.

Your not causing me any trouble I'm here to help, it's all part of the master plan world domination one user at a time we have secret meetings on IRC so don't tell anyone.