Did you try making sure Sacrosanct is loaded below other mods that modify PlayerVampireQuestScript and/or DLC1PlayerVampireChangeScript and making sure there aren’t any loose copies of the scripts in your data/scripts folder? Sounds like conflicting mods
I’m just back to buying Blu rays. To me it’s the safer option, you legally own your product and you can host everything you want yourself still. MakeMKV is a great tool.