I get the error when trying to load the plugin after the september update:

ZoneManager - Failed to compile: The type or namespace name 'BaseHelicopterVehicle' could not be found (are you missing a using directive or an assembly reference?) | Line: 1034, Pos: 64

To get it loaded i deleted the relevant code to get it operational but now im not sure what impact it might have later on 

mostly likely will have to wait for an update for the plugin

Having an additional issue, the plugin loads but then outputs:

[ZoneManager] Timer 2s has failed: (The requested operation caused a stack overflow.)

Error while compiling ZoneManager: The type or namespace name 'BaseHelicopterVehicle' could not be found (are you missing a using directive or an assembly reference?) | Line: 1015, Pos: 64

This is my error

Thats my Error

Failed to compile: Argument 1: cannot convert from 'Oxide.Plugins.ItemId' to 'ItemId' | Line: 1461, Pos: 53

ZoneManager - Failed to compile: The type or namespace name 'BaseHelicopterVehicle' could not be found (are you missing a using directive or an assembly reference?) | Line: 1015, Pos: 64

I'm getting the same error,

ZoneManager - Failed to compile: The type or namespace name 'BaseHelicopterVehicle' could not be found (are you missing a using directive or an assembly reference?) | Line: 1034, Pos: 64