title: rails is currently not installed after reboot
body: <p>I have a strange problem: I have installed ruby on rails on rvm. Everything is ok, I can create project.. But after rebooting when I typing "rails new " I have "The program 'rails' is currently not installed.".</p>
  
  <pre><code>System Ubuntu 12.04
  
  ruby -v
  "1.9.3p194"
  
  gem list
  actionmailer (3.2.5)
  actionpack (3.2.5)
  activemodel (3.2.5)
  activerecord (3.2.5)
  activeresource (3.2.5)
  activesupport (3.2.5)
  arel (3.0.2)
  builder (3.0.0)
  bundler (1.1.4)
  coffee-rails (3.2.2)
  coffee-script (2.2.0)
  coffee-script-source (1.3.3)
  erubis (2.7.0)
  execjs (1.4.0)
  hike (1.2.1)
  i18n (0.6.0)
  journey (1.0.3)
  jquery-rails (2.0.2)
  json (1.7.3)
  mail (2.4.4)
  mime-types (1.18)
  multi_json (1.3.6)
  polyglot (0.3.3)
  rack (1.4.1)
  rack-cache (1.2)
  rack-ssl (1.3.2)
  rack-test (0.6.1)
  rails (3.2.5)
  railties (3.2.5)
  rake (0.9.2.2)
  rdoc (3.12)
  rubygems-bundler (1.0.2)
  rvm (1.11.3.3)
  sass (3.1.19)
  sass-rails (3.2.5)
  sprockets (2.1.3)
  sqlite3 (1.3.6)
  thor (0.15.2)
  tilt (1.3.3)
  treetop (1.4.10)
  tzinfo (0.3.33)
  uglifier (1.2.4)
  </code></pre>