Error when creating new Rails project

I installed the Rails installer. Now I'm trying to create a new Rails project. When I do

C:\Sites> rails new demoproj

I get this error:

Fetching source index for http://rubygems.org/
Could not reach rubygems repository htt开发者_如何转开发p://rubygems.org/
Could not find gem 'turn (>= 0)' in any of the gem sources listed in your Gemfile.

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I'm assuming you are installing rails over proxy. This maybe what you are looking for:

Add the given option to your gemrc file

gem: -p http//#{proxy-server}:#{port}

Creating a new rails 3 project over a proxy in windows

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in a general way, that problem means you need to do a bundle install. no clue if its a windows specific issue though, there should be an automatic bundle after it creates the project.