@NickJonasnTheAD I took your cue, and I also rolled back to a previous save from right before the patch/error code/glitches, and I was FINALLY able to load my family (who was stuck on a community lot in Tartosa in newer saves). I have a habit of making a backup of my save folder before any patches or updates. So I am in agreement that any saves created during the initial, glitchy patch are corrupted.
I also created a new vanilla save today to test things out, and I am able to go to community lots on that new save as well with no issues. My corrupted saves are from the afternoon of 7/23/24 and any subsequent saves on that save file are also corrupted. My saves from the morning of 7/23/24 and earlier are unaffected (so far).
I honestly think this bug is tied to a previous bug that was listed on the forums last year, involving the Welcome Wagon, as the 123 error code and zone spin up issue was also cited in the LE for that as well. This time, I believe the issue is bigger than the Welcome Wagon event bug because it seems to involve ALL situations: Bars, Cafes, Restaurants, Discover University Rival Situations, Get Famous Celebrity Situations, Thrift Tea Event Situations, etc. I seriously suspect that the Lovestruck dating mechanism, which relies on various lots and situations to simulate the different dating scenarios, broke ALL zone spin up situations on various types of lots throughout the game.
The households that I couldn't load were either on a community lot like a bar or were at their home lot which also had NPCs working as baristas and bartenders at their home businesses (using LMS Auto Employees). I couldn't access restaurants either.