On Carbon Version 2 . 0 . 151 . 0 Rust Version 744/2565.259.1 and probabbly the current oxide version too. You get the following error

Failed compiling 'TurretSwitches.cs':
  1. 'HashSet<PlayerNameID>' does not contain a definition for 'Exists' and no accessible extension method 'Exists' accepting a first argument of type 'HashSet<PlayerNameID>' could be found (are you missing a using directive or an assembly reference?) [CS1061]
     (TurretSwitches 72 line 171)​

 to fix this you need to replace Line 171 with

                return Turret.GetBuildingPrivilege().authorizedPlayers.Any(x => x.userid == player.userID);

 and Line 198 with

                return SamSite.GetBuildingPrivilege().authorizedPlayers.Any(x => x.userid == player.userID);

Thanks for the report, I'll look into it.

Is there a fix for this? Im having issues adding this to my server. Keep getting errors on Line 171 and 198. The above replacements didnt fix the issue for me.

The latest version that I uploaded yesterday should work.