I was using the full game.
Did some digging, but no answers yet as to why it happened.
I got around the two errors I hit though, by using Unren option 1, then load up a save from very near the end of the previous release. Shift-D to open its menu, then selected the Variable Viewer and saw that both 'pitevents' and 'todd_trust' showed as "deleted".
Then opened the console and typed:
pitevents=[]
todd_trust=1
That allowed me to at least finish the update with that save, with no more errors. I posted in Philly's Discord about this issue, so we'll see what shakes out.