ooops

game/engines/default/modules/boot/class/Game.lua

@@ -144,7 +144,7 @@ Now go and have some fun!]]
 	self:triggerHook{"Boot:runEnd"}
 
 	if not config.settings.upgrades or not config.settings.upgrades.v1_0_5 then
-		if not config.settings.background_saves or config.settings.tome.save_zone_levels then
+		if not config.settings.background_saves or (config.settings.tome and config.settings.tome.save_zone_levels) then
 			Dialog:simpleLongPopup("Upgrade to 1.0.5", [[The way the engine manages saving has been reworked for v1.0.5.
 
 The background saves should no longer lag horribly and as such it is highly recommended that you use the option. The upgrade turned it on for you.
@@ -156,6 +156,7 @@ For the same reason the save per level option should not be used unless you have
 		self:saveSettings("background_saves", "background_saves = true\n")
 		self:saveSettings("tome.save_zone_levels", "tome.save_zone_levels = false\n")
 		config.settings.background_saves = true
+		config.settings.tome = {}
 		config.settings.tome.save_zone_levels = false
 	end
 end