if the new lift from rust is part of the building , it copies corectly
but if you walk thru it or touch it, then  the client throws errors in red all over screen....

same here then kicks the players from server when they cant enter for x minutes

I think maybe it is Client side...
Becasue it throws a load of red textual warnings on the screen...

Any fix for this yet? Of course it's client side, but it's also when we paste the structure with the elevator. Not when building or interacting after built.
It seems you can paste it on the server, but interacting with the elevator throws all the red client side spam.

My fix is going to be to destroy the elevators, copy, wipe, paste, then manually replace the elevators and wiring. I'm not sure if the buttons have to go as well.

I dont run an active server so bad solution for most, I'm sure.

The only way is to not use lifts or totally remove & replace them into the copy each time.
I strongly suspect the  red button....

Merged post

OK some more on this....
found it....

you have to be  in the elevators looking down. or at buttons....
and it only does it on copied lifts.

NullReferenceException: Object reference not set to an instance of an object.
  at ElevatorLift.Menu_LowerElevator_ShowIf (BasePlayer p) [0x00000] in <00000000000000000000000000000000>:0 
  at ElevatorLift.GetMenuOptions (System.Collections.Generic.List`1[T] list) [0x00000] in <00000000000000000000000000000000>:0 
  at BaseEntity.GetEntityMenu (BasePlayer player, System.Collections.Generic.List`1[T] optionList) [0x00000] in <00000000000000000000000000000000>:0 
  at BaseEntity.GetMenuItems (BasePlayer player) [0x00000] in <00000000000000000000000000000000>:0 
  at BaseEntity.GetMenuInformation (UnityEngine.GameObject primaryObject, BasePlayer player) [0x00000] in <00000000000000000000000000000000>:0 
  at GameMenu.Util.GetInfo (UnityEngine.GameObject obj, BasePlayer player) [0x00000] in <00000000000000000000000000000000>:0 
  at BasePlayer.GetInteractionEntity () [0x00000] in <00000000000000000000000000000000>:0 
  at LookatTooltip.Update () [0x00000] in <00000000000000000000000000000000>:0