I'm getting the same error.
Here's what's happening with me:

Runnning Koppix3.7 with a PHD(256 USB flash)

* install klik (seems fine)
* installl superkaramba (seems fine, but hangs at 90% for a sec, add asks for comments on the install before it reaches 100%)
* superkaramba.cmg displays on the desktop
* run superkaramba.cmg by clicking on it (runs fine)
* downloaded some themems for superkaramba.cmg (they run fine too)
* reboot (desktop loads, superkaramba.cmg is still there)
* run superkaramba.cmg by clicking on it (it fails with the following error)

Your /etc/fstab is not yet prepared for mounting .cmg images.
As root, please make /mnt/app writeable and add the following lines:
################################################## ##############
/mnt/app/1/image /mnt/app/1 auto user,noauto,ro,loop,exec 0 0
/mnt/app/2/image /mnt/app/2 auto user,noauto,ro,loop,exec 0 0
/mnt/app/3/image /mnt/app/3 auto user,noauto,ro,loop,exec 0 0
/mnt/app/4/image /mnt/app/4 auto user,noauto,ro,loop,exec 0 0
/mnt/app/5/image /mnt/app/5 auto user,noauto,ro,loop,exec 0 0
/mnt/app/6/image /mnt/app/6 auto user,noauto,ro,loop,exec 0 0
/mnt/app/7/image /mnt/app/7 auto user,noauto,ro,loop,exec 0 0
################################################## #############

* tried to drag and drop superkaramba.cmg onto .zAppRun (same error)
* if I make the above changes, they get lost after a reboot
* the only obvious fix for me is to reinstall klik after every reboot, which isn't something I really want to do

In early December, before the cmg stuff was added, klik installed to a visible folder within my home directory by default, and so did the apps I installed. Everything ran fine, and even after reboot, klik ran the previously installed programs just fine. I hope this info can help reslove the bug, because I'm a huge fan, and I just want it to run as smoothly as it used to.

Thanks,