title: Error: "Could not find rake", yet Rake is installed
body: <p>Why am I receiving this Rake error:</p>
  
  
  
  <pre class="lang-bsh prettyprint-override"><code>$ rake --version
  /Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:247:in `to_specs': Could not find rake (&gt;= 0) amongst [] (Gem::LoadError)
      from /Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:256:in `to_spec'
      from /Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems.rb:1231:in `gem'
      from /Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194/bin/rake:18:in `&lt;main&gt;'
      from /Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:14:in `eval'
      from /Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:14:in `&lt;main&gt;'
  </code></pre>
  
  <p>given that the following is the case:</p>
  
  <pre class="lang-bsh prettyprint-override"><code>$ gem list
  
  *** LOCAL GEMS ***
  
  bundler (1.1.3)
  rake (0.9.2.2)
  rubygems-bundler (1.0.2)
  rvm (1.11.3.3)
  $ which rake
  /Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194/bin/rake
  </code></pre>
  
  <p>Specifically: is this error message stemming from a <strong>bug</strong>, or from a <strong>configuration problem</strong> (and if the latter, then which steps might remedy it)?</p>
  
  <hr>
  
  <p><strong>Update:</strong> additional terminal output as requested:</p>
  
  <pre class="lang-bsh prettyprint-override"><code>$ which gem
  /Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194/bin/gem
  $ whereis rake
  /usr/bin/rake
  $ echo $PATH # I've edited the output as one item per line for easier reading
  /Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194/bin:
  /Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194@global/bin:
  /Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194/bin:
  /Volumes/Data/sampablokuper/.rvm/bin:
  /opt/local/bin:
  /opt/local/sbin:
  /usr/bin:
  /bin:
  /usr/sbin:
  /sbin:
  /usr/local/bin:
  /usr/texbin:
  /usr/X11/bin:
  /usr/local/git/bin:
  /Library/Application Support/VMware Fusion:
  /Volumes/Data/sampablokuper/bin:
  /Volumes/Data/sampablokuper/.rvm/bin
  $ type rvm | head -n1
  rvm is a function
  $ rvm info
  
  ruby-1.9.3-p194:
  
    system:
      uname:       "Darwin spksmb.lan 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun  7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386"
      bash:        "/bin/bash =&gt; GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin10.0)"
      zsh:         "/bin/zsh =&gt; zsh 4.3.9 (i386-apple-darwin10.0)"
  
    rvm:
      version:      "rvm 1.14.3 (stable) by Wayne E. Seguin &lt;wayneeseguin@gmail.com&gt;, Michal Papis &lt;mpapis@gmail.com&gt; [https://rvm.io/]"
      updated:      "9 hours 36 minutes 53 seconds ago"
  
    ruby:
      interpreter:  "ruby"
      version:      "1.9.3p194"
      date:         "2012-04-20"
      platform:     "x86_64-darwin10.8.0"
      patchlevel:   "2012-04-20 revision 35410"
      full_version: "ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin10.8.0]"
  
    homes:
      gem:          "/Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194"
      ruby:         "/Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194"
  
    binaries:
      ruby:         "/Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194/bin/ruby"
      irb:          "/Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194/bin/irb"
      gem:          "/Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194/bin/gem"
      rake:         "/Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194/bin/rake"
  
    environment:
      PATH:         "/Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194/bin:/Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194@global/bin:/Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194/bin:/Volumes/Data/sampablokuper/.rvm/bin:/opt/local/bin:/opt/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/texbin:/usr/X11/bin:/usr/local/git/bin:/Library/Application Support/VMware Fusion:/Volumes/Data/sampablokuper/bin"
      GEM_HOME:     "/Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194"
      GEM_PATH:     "/Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194:/Volumes/Data/sampablokuper/.rvm/gems/ruby-1.9.3-p194@global"
      MY_RUBY_HOME: "/Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194"
      IRBRC:        "/Volumes/Data/sampablokuper/.rvm/rubies/ruby-1.9.3-p194/.irbrc"
      RUBYOPT:      ""
      gemset:       ""
  </code></pre>