[NCLUG] Error message from cron

[bmc]

Hey all,
Being that I am not admin material ( but working on it everyday) I am not
sure what this message I am getting from cron means can any of you help?

I keep getting this message
Invalid system activity file: /var/log/sa/sa11
and its coming from Cronr<root at lccc3c24> /usr/lib/sa/sa1 1 1

I looked in the latter directory and found no script there with that name
and in /var/log the file doesn't even exist.

Any ideas as to what the heck this is supposed to mean?
Brett