Beginners Rails - error in Helloworld

I am trying Ruby on Rails for the first time and following the page at
http://guides.rubyonrails.org/getting_started.html.

I think I have done kind of ok with the installation and got to the
"Welcome aboard" page. But the Say "Hello", Rails part is not working.
Getting ExecJS::ProgramError in Welcome#index.

I probably have missed something in the installation process.

Attaching error screens and the console output.

Please help.

Best regards,
Mustaq Pradhan

Attachments:
http://www.ruby-forum.com/attachment/11228/app_error_with_env.jpg
http://www.ruby-forum.com/attachment/11229/app_error_with_trace.jpg
http://www.ruby-forum.com/attachment/11230/Console.jpg

execjs seems to have broken windows' wsh support at one point. Install
nodejs or add therubyracer gem.

You can use my previously answered Stack Overflow question to help you get yourself in the right path. http://stackoverflow.com/a/29609359/4316935

Feel free to repost this link when necessary.

Thanks for the replies.
Falling back to coffee-script-source 1.8.0 worked.
Mentioned at http://stackoverflow.com/a/29609359/4316935 by Rodrigo
Argumedo.