I can't get qchroot to work.

- If I run "sudo qchroot MyDocs/rootfs.img /.debian" as user, it says "sudo: unable to execute /bin/qchroot: Operation not permitted";

- if I run it as root, it says "root is not in the sudoers file. This incident will be reported";

- and I get the same error if I run the command from opensh.

The /etc/sudoers file was edited according to the howto. :/