I'm getting this after a reboot of my VM - Haven't changed anything, but tried updating to 2.0.0.3 from 1.5.0 and get the same issue.
Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object.
at ARKUpdater.Interfaces.ServerInterfaceWindows.StartServer(ServerChild ServerData) in C:\Users\SamGo\Documents\Visual Studio 2017\Projects\ArkUpdater-master\ARKUpdater\Interfaces\ServerInterface.cs:line 70
at ARKUpdater.ARKUpdater.Run() in C:\Users\SamGo\Documents\Visual Studio 2017\Projects\ArkUpdater-master\ARKUpdater\Program.cs:line 391
at ARKUpdater.Program.Main(String[] args) in C:\Users\SamGo\Documents\Visual Studio 2017\Projects\ArkUpdater-master\ARKUpdater\Program.cs:line 131