Cramfs has been entered into my kernel config as a module and entered into /etc/rc.conf module listing.

I have attempted to run the desktop .cmg files with right click ...select AppRun.

I have also tried the "run command" ...click and drag .cmg into "run Command" and receive Kde error "cannot run /mnt/app1"

I have entered all the Klik details in fstab.

You mention "exec" which is not yet in the fstab listing. I assume if I add it , it would have to be added to all seven entries of /mnt/app.

One thing I did gave a clue...I opened the "tmp/klik/galculator" file in Konqueror and performed "click and drag" AppRun to "Wrapper". The result is given below:
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tmp/klik/galculator/usr/bin/galculator: error while loading shared libraries: libglade-2.0.so.0: cannot open shared object file: No such file or directory
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I expect that some of the Klik material will not perform for dependencies absent.

If I perform the usual "mount" command ....what coding would be necessary to mount the galculator.cmg image file in /mnt/app?

The /mnt/app directory has been chmod full permissions.

If I use the "Run Command" what should be entered? If I have no entry in /mnt/app, is an entry created when I run right-click...AppRun?

I hope I have given you some useful feedback.