Looks like there's an issue custom_require.rb. Looks like a var called required isn't declared properly, not in a .h or the like. Here's the cmd line command I tried to run, it's straight out of the book on page 29:

C:\Ruby192\PROJECTS\addressbook>ruby script/generate scaffold person name:string address:string phone:string email:string blog:string

<internal:lib/rubygems/custom_require>:29:in `require': no such file to load --
script/../config/boot (LoadError)
from <internal:lib/rubygems/custom_require>:29:in `require'
from script/generate:2:in `<main>'


please help...