Steps to reproduce:
$ echo -e "require 'rubygems'; require 'factory_data_preloader'\nquit" >
irb_load_test
$ irb < irb_load_test
and compare output to:
$ echo -e "require 'rubygems'; require 'fastercsv'\nquit" >
irb_load_test
$ irb < irb_load_test
Thanks!