Correct , in my screenshot it is not the doubled up mod button due to only appearing if using an old saves which for most that continue to play will probably get.Huh odd, I'll start working on fixing all that thanks i never saw that post, tho it seems your mod button isn't doubled in your screenshots?
I just found it easier to just restart with the mod. So I do hope you are able to finish the mod with the game saying this because it almost feels like it would need a whole guide rewrite. Oh and I was wrong before the Cascade step 11 is different it does happen during the Morning. What I think I found is the Story mode Quest is what was doing the one I was posting about which is why that part was not working and showing up in the quests.
I do not know how long those types of edits will take but I do hope you might add one for the story mode since it also has options to pick for collecting char specific RS SL or PEEKs. I looked at the guide and screens RPY files for the mod and just cannot make heads or tails to find any way to help. lol
I do hope it gets better in future if you use this style of mod for other games since lain stopped it is nice to see it revived.