Always the same error code

Im new to the RSpec and tried to launch the RSpec project on my own PC instead of web practices like Codeschool. Ive installed Ruby and RSpec
following to some tutorials step-by-step and got that error. The similar
error I get after launching premade tests and exercises from Testruby.
What should I do?
P.S.: sorry for my english

Jesus Castello wrote in post #1172056:

It seems like Ruby can’t find your zombie.rb file. Try adding this line
to the top of zombie_spec.rb

require_relative ‘zombie’

Thanks a lot! That helped!