diff --git a/data/computercraft/lua/rom/programs/chest_sorter.lua b/data/computercraft/lua/rom/programs/chest_sorter.lua
index da88512..e3bf0c2 100644
--- a/data/computercraft/lua/rom/programs/chest_sorter.lua
+++ b/data/computercraft/lua/rom/programs/chest_sorter.lua
@@ -237,9 +237,10 @@ local function showTutorial()
 end
 
 -- 主程序
-local function main()
+local function main(...)  -- 改为可变参数函数
   -- 检查是否需要显示教程
-  if #({...}) > 0 and ({...})[1] == "tutorial" then
+  local args = {...}
+  if #args > 0 and args[1] == "tutorial" then
     showTutorial()
     return
   end
diff --git a/installer.lua b/installer.lua
index 502d91b..6a32f75 100644
--- a/installer.lua
+++ b/installer.lua
@@ -1,5 +1,5 @@
 -- LeonOS installer
-local INSTALLER_VERSION = "0.3.8 Beta 18"
+local INSTALLER_VERSION = "0.3.8 Beta 19"
 local DEFAULT_ROM_DIR = "/leonos"
 
 print("Start loading LeonOS installer ("..INSTALLER_VERSION..")...")