Como isso não obteve resposta, fiz essa pergunta e recebi uma resposta sobre o estouro de pilha de michaelmichael .
Make sure you've updated rvm with the
rvm update
command. From there you can install 1.9.2 withrvm install 1.9.2
. It'll install and compile ruby 1.9.2-p0. From there, it should interpret1.9.2
as the final release. I'm also on a mac, and this worked for me after having rc2 installed.