title: rake assets:precompile error message: No such file or directory -- ruby
body: <p>I'm following along to the excellent Michael Hartl Rails book (Rails 3.2) but am getting an error when attempting to run the command:</p>
  
  <pre><code>rake assets:precompile
  </code></pre>
  
  <p>The error is as follows:</p>
  
  <pre><code>/Users/Jamie/.rvm/rubies/ruby-1.9.3-p448/bin/ruby ruby /Users/Jamie/.rvm/gems/ruby-1.9.3-p448@movies/bin/rake assets:precompile assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets
  /Users/Jamie/.rvm/rubies/ruby-1.9.3-p448/bin/ruby: No such file or directory -- ruby /Users/Jamie/.rvm/gems/ruby-1.9.3-p448@movies/bin/rake assets:precompile (LoadError)
  rake aborted!
  Command failed with status (1): [/Users/Jamie/.rvm/rubies/ruby-1.9.3-p448/b...]
  /Users/Jamie/.rvm/gems/ruby-1.9.3-p448@movies/gems/actionpack-    3.2.14/lib/sprockets/assets.rake:12:in `ruby_rake_task'
  /Users/Jamie/.rvm/gems/ruby-1.9.3-p448@movies/gems/actionpack-3.2.14/lib/sprockets/assets.rake:21:in `invoke_or_reboot_rake_task'
  /Users/Jamie/.rvm/gems/ruby-1.9.3-p448@movies/gems/actionpack-3.2.14/lib/sprockets/assets.rake:29:in `block (2 levels) in &lt;top (required)&gt;'
  /Users/Jamie/.rvm/gems/ruby-1.9.3-p448@movies/bin/ruby_executable_hooks:14:in `eval'
  /Users/Jamie/.rvm/gems/ruby-1.9.3-p448@movies/bin/ruby_executable_hooks:14:in `&lt;main&gt;'
  Tasks: TOP =&gt; assets:precompile
  </code></pre>
  
  <p>Thanks for your help!</p>