My first time out; I'm reading Michael Hartl's book, and installing
according to the instructions on Rubyonrails.org.
Does it say that the install instructions are for Windows and for
rails 4.1?. You have not provided a specific link so I am not able to
check. If they are not specifically for Windows then they are
unlikely to work.
We will have someone look at that. Can you also open a ticket on GitHub? We usually track the bug progress overthere. (If you mention me @sikachu on that that’d be great as well).
In the meantime, you should be able to do gem install rails --no-ri --no-rdoc which skips the local documentation generation.