TheWildDefender

Thank

you

so

much.

It worked. Also, thanks for the quick answer.

I was trying to make a computer program to control a BigReactor turbine (I'll use a microcontroller after I figure this out). I know that the computer port acts as a component, so first of all, to increase the convenience of access of the computer port, I wrote

local turbine = component.proxy(component.get("5e7"))

That was the very first line of the program; 5e7 is the shortened address of the computer port. There is a bunch more code at the bottom that does the actual regulating, but when I run the program, it spits out this error message:

/home/turbine_control:1: attempt to index global 'component' (a nil value):
stack traceback:
	/home/turbine_control:1: in main chunk:
    (...tail calls...)
    [C]: in function 'xpcall'
    machine:751: in function 'xpcall'
    /lib/process.lua:94: in function </lib/process.lua:90>

Greatly confused, I read the message. I interpreted it as in line one of my program, turbine_control, I am accessing the undefined variable 'component'. I don't know what this completely means, and I even checked the process.lua function and coming out with no idea what was going on. I can call the function in the interactive lua prompt with no problem, but in a program, it doesn't let me.

What's going on, and how can I fix this?