Can't get knx-cdcust.sh to work at all

I'm just trying to implement step A2, which unpacks an ISO into a directory. I have the ISO from Knoppix so I don't need to make it from the CD. The app crashes with:

#================================================= ============================
# VERSION : 0.5.1
# LICENCE : GPL
# PURPOSE : Knoppix CD Customizer
# DATE : 2003-03-15
# REVISION: 2003-03-28
# AUTHOR : Hans-Achim Unger, [email protected] (xdialog-features)
# ORIGINAL: (c) 3/2003 by Thomas Lange, [email protected]
# USAGE : knx-cdcust.sh
# SW : bash, xdialog, create_compressed_fs
# SYSTEM : GNU/LINUX
# INIFILE : $HOME/.knx-cdcust.rc
#================================================= ============================
Programm create_compressed_fs not found
Xdialog: /usr/local/bin/Xdialog
cdrecord: /usr/bin/cdrecord /usr/man/cat1/cdrecord.1.bz2 /usr/man/man1/cdrecord.1.gz /usr/share/man/cat1/cdrecord.1.bz2 /usr/share/man/man1/cdrecord.1.gz /usr/X11/man/cat1/cdrecord.1.bz2
Seconds since start: 54, 54 in menu
/dev/loop0: Invalid argument
mount: you must specify the filesystem type

I'm doing this on a Slackware 9.1 box with kernel 2.4.22.

Thanks,

DT

One idea: in Your Slackware 9.1 box the program "create_compressed_fs" is missing, which is needed by knx-cdcust.sh.

Good luck.