From: Willyam Anton <lists@...>
Date: 2013-07-08T14:01:02+09:00
Subject: Re: Unable to activate sinatra-contrib-1.4.0

This problem is fixed.

It turns out that an isolate file contains the following that makes it 
conflicts

gem "sinatra", "1.2.6"

changing it to

gem "sinatra", "1.4.3"

will fix it.

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