Excuse me, but I'll not delete your posting as you've wanted, because I've also seen this error. For me it happens neither with V7.2.0 nor V7.4.0 but with flash disk install of V7.3.0

There I've found within the overlay the folder '/KNOPPIX-DATA/etc/default/keyboard/' with multipe X-Debian-*.desktop files. I've not created this folder and don't know anything about the cause of this error. This folder prevents '/etc/init.d/knoppix-autoconfig' to insert within the file '/etc/default/keyboard' the proper values and the file will be deleted. Now you have problems with your keyboard and xkeyboard settings by the cheatcode or Micro-Remaster.

To fix this error rename the folder
Code:
mv /KNOPPIX-DATA/etc/default/keyboard/ /KNOPPIX-DATA/etc/default/keyboard_false/