From: Justin Collins <justincollins@...>
Date: 2011-08-03T08:16:58+09:00
Subject: Re: Installing gem problem

On 08/02/2011 02:55 PM, amir e. wrote:
> Unfortunately after installing builder ,again Command Prompt give me
> that message.
> please help me.
> thanks
>

What is the output from running "gem sources" ? Are you able to ping the 
sources listed?

-Justin