This playthrough started this Friday. I am also using the pregnancy mod, but there are no edits made to any of these scenes by that mod, and the pregnancy mod is meant to work specifically with this mod + bugfix, that mod doesn't even work without these two. The advance_time_override handles specifically classed events differently (i.e. morning crises seem to be treated differently to advance time than other events) and perhaps there's something wrong with this event, as if it isn't being classified as a morning crisis and thus there's no "Advance Time" statement for this type of crisis.
However again, that's just pure conjecture on my part...
Edit: I figured it out - I think... it's SB's vaginal fetish event (triggered from using a serum with that trait for a few time blocks now) that's calling for an "Advance Time" but, even though this event is happening in the morning, it's not declaring itself as a morning crisis event (Or any crisis event I think), therefore it cannot find an " if _return == "Advance Time": " trigger when looking it up.
Since I'm not code savvy, I can't figure out how to make advance_time_override handle an "Advance Time" call like this. It should be something like "If <whatever file calling for "Advance Time"> =/= any of the if statements, just advance time normally."
Edit2: Especially since the file looks for (or creates?) labels and then clears certain lists and deletes crisis... Way over my head