I just can\'t figure out what is wrong with my setup with Susy. I am on OS X 10.7.4
I have followed along here: http://susy.oddbird.net/guides/getting-started/
I was having this problem and found that my syntax was wrong in my config.rb file. The correct line would be require "susy" but I had an equal sign between require and susy, which is wrong.
require "susy"
I hope that helps other noobs out there like myself.