From: Hakim Benbekhti <lists@...>
Date: 2013-02-21T06:00:44+09:00
Subject: Re: Instalation problem

I am on Mac too. I installed rvm. I had the same error message you got. 
I am sorry for not having  a clear answer but even if I had this error 
message, ultimately everything worked perfectly: rvm, ruby 1.9.3 
installed.
I am not being arrogant but just want to make sure that you are not 
being alarmed for no reason. Are you sure the installation is not 
actually completed?
What do you see when typing this code in you Terminal?       which ruby
or you can type:    ruby -v

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