The auto-save was interrupted mid-write. Solution: Try opening it with File > Open > Database as a last resort, or use a third-party tool like pspp (open source SPSS alternative) to attempt repair.
is a generic extension, "active.sav" doesn't belong to just one game; it is a common filename found in directories for titles like Mount & Blade Don't Starve editor active.sav
Relying on editor active.sav is risky. Implement these habits: The auto-save was interrupted mid-write
The term editor active does not refer to a specific user-named project. Instead, it is a used by SPSS. Database as a last resort
Modifying game files is often against the Terms of Service. Anti-cheat systems may flag "Active.sav" edits as "third-party modification," leading to permanent bans.