If the stone wardens addon can not be enabled due to failed login, savefile...

If the stone wardens addon can not be enabled due to failed login, savefile loading will abord instead of damaging it.

game/engines/default/engine/Module.lua

@@ -419,6 +419,12 @@ function _M:loadAddons(mod, saveuse)
 					else
 						print("Removing addon "..add.short_name..": DLC class not received")
 						table.remove(adds, i) removed = true
+						if saveuse then
+							-- The savefile requires it, but we couldnt activate it, abord
+							core.game.setRebootMessage(([[The savefile requires the #YELLOW#%s#WHITE# addon.
+Some of its features require being online and could not be enabled. To prevent damaging the savefile loading was aborded.]]):format(add.long_name))
+							util.showMainMenu()
+						end
 						break
 					end
 				end

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

@@ -178,6 +178,11 @@ Safe Mode disabled all graphical options and sets a low FPS. It is not advisable
 Please go to the Video Options and try enabling/disabling options and then restarting until you do not get this message.
 A usual problem is shaders and thus should be your first target to disable.]], 700)
 	end
+
+	local reboot_message = core.game.getRebootMessage()
+	if reboot_message then
+		Dialog:simpleLongPopup("Message", reboot_message, 700)
+	end
 end
 
 function _M:grabAddons()

src/core_lua.c

@@ -542,8 +542,28 @@ static int lua_check_error(lua_State *L)
 	return 1;
 }
 
+static char *reboot_message = NULL;
+static int lua_set_reboot_message(lua_State *L)
+{
+	const char *msg = luaL_checkstring(L, 1);
+	if (reboot_message) { free(reboot_message); }
+	reboot_message = strdup(msg);
+	return 0;
+}
+static int lua_get_reboot_message(lua_State *L)
+{
+	if (reboot_message) {
+		lua_pushstring(L, reboot_message);
+		free(reboot_message);
+		reboot_message = NULL;
+	} else lua_pushnil(L);
+	return 1;
+}
+
 static const struct luaL_Reg gamelib[] =
 {
+	{"setRebootMessage", lua_set_reboot_message},
+	{"getRebootMessage", lua_get_reboot_message},
 	{"reboot", lua_reboot_lua},
 	{"set_current_game", lua_set_current_game},
 	{"exit_engine", lua_exit_engine},