Error received when hitting 'restart same'

Lua Error: /mod/class/Game.lua:212: attempt to index field 'zone' (a nil value)
	At [C]:-1 __index
	At /mod/class/Game.lua:212 birth_done
	At /mod/class/Game.lua:339 at_end
	At /mod/dialogs/Birther.lua:323 fct
	At /mod/dialogs/Birther.lua:196 checkNew
	At /mod/dialogs/Birther.lua:314 atEnd
	At /mod/dialogs/Birther.lua:872 loadPremade
	At /mod/dialogs/Birther.lua:1000 on_register
	At /engine/Game.lua:371 registerDialog
	At /mod/class/Game.lua:345 newGame
	At /mod/class/Game.lua:136 runReal
	At /mod/class/Game.lua:93 run
	At /engine/Module.lua:1060 instanciate
	At /engine/utils.lua:2221 showMainMenu
	At /engine/init.lua:165
	At [C]:-1 dofile
	At /loader/init.lua:217

Error received when hitting 'load premade'

Lua Error: /mod/class/Game.lua:212: attempt to index field 'zone' (a nil value)
	At [C]:-1 __index
	At /mod/class/Game.lua:212 birth_done
	At /mod/class/Game.lua:339 at_end
	At /mod/dialogs/Birther.lua:323 fct
	At /mod/dialogs/Birther.lua:196 checkNew
	At /mod/dialogs/Birther.lua:314 atEnd
	At /mod/dialogs/Birther.lua:872 loadPremade
	At /mod/dialogs/Birther.lua:964 fct
	At /engine/ui/Button.lua:63 fct
	At /engine/Mouse.lua:58 receiveMouse
	At /engine/Mouse.lua:98 delegate
	At /engine/ui/Dialog.lua:657 mouseEvent
	At /engine/ui/Dialog.lua:399 fct