[LUA][ERROR]"attempt to call nil" Notebook Script

I was trying out a notebook script I found earlier on the tekkit classic wiki (http://tekkitclassic.wikia.com/wiki/Tutorial/Notebook) and i've got it to open the first page. But when I type the numbers on the front page, I get these errors:

"1" - notebook:13: attempt to call nil
"2" - notebook:22: attempt to call nil
"3" - notebook:39: attempt to call nil


Here is the code I imputed:


done = false

print("Welcome to Notebook")
print("1. Read file")
print("2. Write file")
print("3. List documents")
print("4. Exit program") – Press any of these numbers to activate that function

while true do
event, key = os.pullEvent("char")

if key == "1" then
clear()
print("Which file do you want to read?")
sFile = read()
print("Standby, opening file")
sleep(1)
print(file.read("notes/"..sFile, "a")) – This is our API, remember?
return

elseif key == "2" then
clear()
print("What do you want to name the file? (No spaces)")
sFile = read()
print("Standby, opening file")
sleep(1)
clear()
print("Type exit() to quit editing document")
repeat
input = read()
if input == "exit()" then
done = true
else
file.write("notes/"..sFile, "w", input)– This is also our api
end
until done – Keep looping until the input is "exit()"

elseif key == "3" then
clear()
shell.run("list", "notes")
return
elseif key == "4" then
return
end
end

Any help would be Great. Thanks!

The script calls a clear() function without declaring one. You could probably just put this at the top to gain basic functionality:

local function clear()
  term.clear()
  term.setCursorPos(1, 1)
end

I tried what you said and it comes up with the same messages.

Please post the new code and the full text of the new error messages.

If the errors really are the same, then that means you're still getting them because you ignored the bit about putting the new code at the top.