Error while compiling CompoundOptions: 'NPCAutoTurret' does not contain a definition for 'SetFlag' and no accessible extension method 'SetFlag' accepting a first argument of type 'NPCAutoTurret' could be found (are you missing a using directive or an assembly reference?) | Line: 140, Pos: 27

Same here

Error while compiling CompoundOptions: 'NPCAutoTurret' does not contain a definition for 'SetFlag' and no accessible extension method 'SetFlag' accepting a first argument of type 'NPCAutoTurret' could be found (are you missing a using directive or an assembly reference?) | Line: 140, Pos: 27

A fix can be found in the Umod discord -> #Broken Plugins channel