Quote Originally Posted by Ninety8C5 View Post
Where did you find that ? I just checked OS 19980400 (that's the one I asked for) and a quick check of OS 19980200 and they are both X out as not valid. Is there something else I need to look at? Do I need to re-validate PIDs?

Thanks.
Sometimes PIDs are invalid until you start logging or monitoring.
Select them anyways and start logging/monitoring to see if they become valid.
Of course calc_pids need their dependent PIDs selected to be available.