error when starting web server from environment.rb


I downloaded the rails package "" from "http://" and unzipped in to c drive. When I ran ruby script/server, it throws an error "c:/ruby/lib/ruby/site_ruby/ 1.8/rubygems/custom_require.rb:27:in `gem_original_require': ./ script/../config/../ config/environment.rb:8: syntax error, unexpected '<' (SyntaxError)"

Then I opened the environment.rb and edited to remove < at the line number 8. Ran the same command and works fine.

Is this the problem in rails release package?