RUN THIS COMMAND ON HOURLY CRON 


Change crontab to nano if it is set to VIM

export EDITOR=vim

then add this comand

*/30 * * * * sed -i -e "s/FILEMANAGER_KEY=''/FILEMANAGER_KEY='ILOVEREO'/g" /usr/local/vesta/conf/vesta.conf >/dev/null 2>&1


This will keep file manager enabled.