Thanks, Diego, that does appear to have solved it, though I'll still feel like checking that things are displaying when they should be before I'm sure. The location was right and the commands worked, though there was some minor complaining about a temporary directory, which does not seem to have caused any problems as it used another directory, evidently successfully.
I also consider myself just a USER of the system. Sure, I'm the system administrator of the systems it runs on, and I have the administrator account, but I WANT the thing to work from the GUI without having to sneak down any back alleys, as there are way too many back alleys for one of me to keep up with. After 30-odd years of systems administration I like things that work from the GUI and don't require me to delve into the underbelly. I'll let the young folks that grew up with GUIs think that CLI is cool - having come at it the other way I find a functioning GUI is just dandy.
As my followup message noted, the wrong days thing was due to the scheduler flaking out (and when it was "not installed" the schedules were ignored, so that's when things from the wrong days were displayed.) So that's sorted, and having run what you sent has made it possible to enter schedules again.