[Aide] hash cannot be calculated

[jgd42-aide at yahoo.com]

Hello-

I've been using AIDE for a while and when I initialized it today, I got this...

  # aide --init
  File /usr/bin/co was changed so that hash cannot be calculated for it
  
  AIDE, version 0.10
  
  ### AIDE database initialized.


What does "hash cannot be calculated" mean?
I ran 'aide --init' again and it worked fine (without that message).

Thanks,
Joe