ComputerCraft Help Pleaase

[BobbyDD]

New to computer craft.
Wamted to set up an automatic villager trading system for Mystcraft pages.
I found a scipt that would do this for me and set it up but whenever I run the program I get: "PageFarm:30: attempt to index ? (a niul value)

http://www.reddit.com/r/feedthebeast/comments/21is9p/automatic_mystcraft_page_collecting_with/
^^^^ Is where I got the script from

http://imgur.com/a/VU10D
^^^^ The example setup

http://pastebin.com/P8cGkH9b
^^^^ actual code used

 

[rhn]

It is complaining that the "trade.getVillagerIds()" doesn't return anything. Are you sure that your wrap really works? Do you have OpenPeripherals installed?

Easy test would be to do a:

trade = peripheral.wrap("right")

if trade == "none" then
   print("No trading post found")
end