Adding to this post. Didn't notice a new thread already existed and made my own, so I'm posting mine below:
This is an old bug that was archived, however when looking at the thread itself I noticed that some newer causes of it were missing, so I'm restarting it with updates.
This bug was previously reported with Talent Showcase in the Get Famous patch. Essentially, Prom would appear on the calendar but would not begin. Not pop up would occur, and the game would continue as if the Prom dramanode had never been scheduled.
There were variations of this bug. Immediately after HSY dropped, a variant of it appeared if the user had an outdated MC Command Center Installation. This no longer occurs. This was followed by the Get Famous bug, where Talent Showcase prevented Prom from running. I couldn't find if this was resolved by the time the thread was archived but it seemed people had stopped reporting this specific issue.
However, in my game I've noticed a new version. My legacy family lives on the Ravenwood Estate, and on Saturday at 7, Ravenwood Family Day is running, and only stops an hour later. This event appeared to stop the prom invite from occuring, despite appearing on the calendar.
Something suspicious I noticed is that the auditorium was stuck on graduation, and attempting to manually change it said that it was there because of Community Spaces. This is a new save. A graduation hasn't even taken place yet.
Some reported that this can be caused by the Sim missing the Active variation of school that week. My Sims went to school every day so this is non-applicable for me.
I tried a few things to resolve this bug. First, I removed all my mods. It did not fix it. Second, I tried various fixes using tuning edits:
- Attempted to move the invite dramaNode to an hour later, so it coincided with the festival ending. This did not work. Possibly because my save was quite literally a minute before 7 PM (6:59 PM), which is when Prom starts, and thus it was incapable of being rescheduled.
- Attempted to end the Family Day early. As it was already in progress this did not work either, but I have yet to test if it would work the week after.
- Attempted to switch households. This did not work.
- Attempted to go to the auditorium before the event began. This also did not work.
The following probably won't make sense to most people but I figured I'd add it so maybe Maxis or another modder who is smarter than me can pick up where I left off. Things I noticed:
- I could not find a specific test or testSet that would prevent the event from running. I also tried switching "user_facing_event" parameter from False to True and this did nothing. The same was true for the festivals.
- services.prom_service contains nothing that would cause this bug at first glance. It has tuning for the subvenue and sentiments but nothing else. The script counterpart to this module might be illuminating. The same is true for drama_scheduler.festival_drama_node.
- My suspicions as to what causes this are twofold:
a) It does not involve the festivals, and is instead caused by whatever is forcing the auditorium to be stuck in Graduation mode.
b) It does involve the festivals, but is script-side, not tuning-side, as I wasn't able to find anything. It's possible that I overlooked something in finding this bug, or that testing so close in proximity (and when Prom was already set to start) rendered my tuning changes futile.