I am on a fresh install of OS X Mountain Lion. I have installed rails via:
sudo gem install rails
Everything seems to install correctly, but wh
i got the same error and uninstall rvm then i follow the instructions on this page https://www.digitalocean.com/community/articles/how-to-install-ruby-on-rails-on-ubuntu-12-04-lts-precise-pangolin-with-rvm
i think that help was
rvm requirements
on the terminal.