Hard bug found!
lizard.boy and Kao reported me a bug:
KSMAS folder can't be deleted manually, the user id is "Unknown".
The reason for this bug is that the folder and the files are created by PHP,
who runs on another user id than any FTP user. Server Admins should be able to change the uid. However, the only affordable way is to create an uninstaller for KSMAS, since PHP could delete the files. (I wonder how PHP could delete the setup script...
).
I have not much time, now, but I'll make a fix ASAP.
Sorry for the inconveniences it may cause