It contains various general world-space bug fixes necessary for the larger PRP mod to function correctly without losing vanilla data. Installation & Load Order

Check your mod manager’s tab for its mod name and source .

It is very common for users to misread file extensions or filenames in mod managers like Vortex or MO2.

Is it a critical game master file? A remnant of a deleted mod? Or the source of that persistent crash near Faneuil Hall?