an immortality elixir problem

[George22x]

At the start of the game a player need to dig four items (an immortality elixir, a gem, a dagger and an amulet) from four graves. If I start digging in Arivald’s grave, I get the immortality elixir but if I start digging some other grave and Arivald’s grave only after that then I get notice: "It is just an empty grave" when I dig it and no elixir. It may block the player progress if graves are dug in wrong order. Tested in ScummVM 2.1.2 on Windows 10.