From http://klik.atekon.de/docs/?page=How%20to%20use
Client
In order to use klik, you need to have the klik client installed. Kanotix BH 9 and newer have this by default (when running from the Live CD), and for other Knoppix derivates you can follow the following instructions:

* Make sure you are really using one of the supported distribution versions
* Press Alt-F2 and paste:
* wget klik.atekon.de/client/install -O -|sh

Then you can point-and-klik install the software packages from this site.

.cmg files
Support for .cmg files is now installed by the klik client.

* Simply click on .cmg files in KDE to run them. (Or drag .cmg files on ~/.xAppRun in order to run them. The klik client sets KDE to open .cmg files with ~/.xAppRun automatically.)

I installed klik on KanotixBH8 LiveCD some time ago (from the berlios.de site) before your new changes.

(I run "diskless", booting from CDROM.)

Do I need to delete the older version and install the newer one?

Thanks...