Big Reactor Control Program

I have made a computer control program for Big Reactors. It will auto detect if you are using a turbine, and you can set it to use redstone control or use the internal storage of the Reactor/turbine.

http://pastebin.com/NRsUFv8D

It doesn't work. It says "string 46: attempt to call index ? (a nil value).

Did you make sure to set the variables from line 28 to 31 and make sure they are not commented out. That what I think may be the problem.