exit: 255
You (asterisk) are not allowed to use this program (/usr/bin/crontab)
See crontab(1) for more information
Unable to continue. Cron line added didn’t remain in crontab on final check in /var/www/html/admin/libraries/BMO/Cron.class.php on line 99
var/spool/cron/asterisk has asterisk permissions
i removed sipstation and dahdi config as they were throwing other errors