Plesk 11 dosn’t allow you to execute cronjobs outside your chrooted shell so e.g. if you want to call a php file over the Plesk Panel cron management you get in trouble becouse the binary dosn’t exists within the chrooted enviroment. If you trust your customers enough to allow execution of scripts in a non-chrooted environment, you could enable it by the follwoing shell command: For Plesk Panel 10: Console command to enable: /usr/local/psa/admin/bin/server_pref -u -crontab-secure-shell "/bin/sh" Console command [...]