NRPE: Command not defined

I have this error NRPE: Command ‘check_cpu_usage’ not defined. It is the same for all other commands.
This command works on my remote server which i want to monitor . /usr/local/nagios/libexec/check_nrpe -H localhost -c check_load
However running /usr/local/nagios/libexec/check_nrpe -H localhost -c /usr/local/nagios/libexec/check_linux_stats.pl -M
does not work. it says that the plugin requires that i have NRPE daemon running on the remote host. My remote host does have NRPE daemon running. Furthermore, adding the command into nrpe.cfg and adding it into the service gives me NRPE: Command “check_memory_usage”not defined.
sorry for bad english