cron job errors

[Mark Busby]

I getting errors from cron on this job. 
  owner of /usr/libexec/sav-entropy is root:wheel
   
  email notice:
  Subject: Cron <operator at redtick> /usr/libexec/save-entropy
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <PATH=/etc:/bin:/sbin:/usr/bin:/usr/sbin>
X-Cron-Env: <HOME=/>
X-Cron-Env: <LOGNAME=operator>
X-Cron-Env: <USER=operator>
  add: not found
   
  crontab entry:
  # Save some entropy so that /dev/random can re-seed on boot.
*/11    *       *       *       *       operator /usr/libexec/save-entropy