Well, since I'm pretty much locked into Win 10 Pro and since MPECSort seems to be incompatible with that OS, can ANYONE tell me what I should be downloading from the MPC site to load critical list objects into Guide?

I believe that most/many Guide 9 users are doing astrometry.  And it's my impression that the MPC wants astrometry to target "critical list" objects.  So someone's probably got a work-around.  No?

Pete