Problem with rvm

gistfile1.txt

$ rvm install 1.8.7
Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.8/x86_64/ruby-1.8.7-p374.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
Installing Ruby from source to: /usr/local/rvm/rubies/ruby-1.8.7-p374, this may take a while depending on your cpu(s)...
ruby-1.8.7-p374 - #downloading ruby-1.8.7-p374, this may take a while depending on your connection...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:--  0:00:01 --:--:--     0
curl: (22) The requested URL returned error: 404
The requested url does not exist(22): 'http://ftp.ruby-lang.org/pub/ruby/1.8/ruby-1.8.7-p374.tar.bz2'
Trying ftp:// URL instead.
curl: (6) Could not resolve host: ftp; nodename nor servname provided, or not known
There was an error(6), please check /usr/local/rvm/log//*.log
There has been an error fetching the ruby interpreter. Halting the installation.