This may be more useful...
This error is from the cron log after disabling and re-enabling the web service through the control panel.
Code:
ERROR: /var/www/clients is writable by group or others!mkdir: cannot create directory `/var/www/clients/client1/web26/var': File exists
mkdir: cannot create directory `/var/www/clients/client1/web26/var/run': File exists
mkdir: cannot create directory `/var/www/clients/client1/web26/var/run/mysqld': File exists
ln: creating hard link `/var/www/clients/client1/web26/var/run/mysqld/mysqld.sock' => `/var/run/mysqld/mysqld.sock': Invalid cross-device link
ERROR: /var/www/clients is writable by group or others!ERROR: /var/www/clients is writable by group or others!invalid shell, /var/www/clients/client1/web26/bin/bash does not exist
usermod: no changes
PHP Warning: mkdir(): File exists in /usr/local/ispconfig/server/plugins-available/cron_jailkit_plugin.inc.php on line 293