my cron job error :(

[dendzaw43]

What's wrong with my cronjob? can not be added or deleted .. when I added a cronjob setting me up like this

"Error
/ usr / bin / crontab: error renaming / var/spool/cron.tmpXXXX2FpIO7 to / var / spool / cron / dendzaw rename: Operation not permitted "

It occurred to me to add or change the cronjob email me ... Though I did not change any name .. prior to its already there are 2 settings cron jobs there. but now not visible. and by the time I wanted to add because I thought it then appears the message is erased. what's this?

[GtoXic]

Hi, there is no need to open two tickets. Requested topic closure.