Could not find RubyGem rack (~> 1.0.0) (Gem::LoadError)

Here is some help for the folks just learning Rails

I am following the Sitepoint book by Patrick Lenz “Simply Rails 2”
and received an error message when attempting to run the command
“rails shovell” to create a new rails application.
I got a load error.
Note:
remember to use a Ruby Console Window.
run the updates:
gem update
gem update --system
gem install rails
gem install Ruby

without installing rails you’ll get an error as shown below.
error shown here:
C:\InstantRails\rails_apps>rails shovell
C:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:827:in
report_activate_ error': Could not find RubyGem rack (~> 1.0.0) (Gem::LoadError) from C:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:261:inact
ivate’
from
C:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:296:in act ivate' from C:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:295:ineac
h’
from
C:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:295:in act ivate' from C:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:296:inact
ivate’
from
C:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:295:in eac h' from C:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:295:inact
ivate’
from
C:/InstantRails/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:68:in `gem’

    from C:/InstantRails/ruby/bin/rails:18

C:\InstantRails\rails_apps>

Here are my environment details: use “gem env” to view your own
environment settings.
Vista Professional
C:\InstantRails\rails_apps>gem env
RubyGems Environment:

  • RUBYGEMS VERSION: 1.3.5
  • RUBY VERSION: 1.8.6 (2007-09-24 patchlevel 111) [i386-mswin32]
  • INSTALLATION DIRECTORY: C:/InstantRails/ruby/lib/ruby/gems/1.8
  • RUBY EXECUTABLE: C:/InstantRails/ruby/bin/ruby.exe
  • EXECUTABLE DIRECTORY: C:/InstantRails/ruby/bin
  • RUBYGEMS PLATFORMS:
    • ruby
    • x86-mswin32-60
  • GEM PATHS:
    • C:/InstantRails/ruby/lib/ruby/gems/1.8
    • C:/Users/joel/.gem/ruby/1.8
  • GEM CONFIGURATION:
    • :update_sources => true
    • :verbose => true
    • :benchmark => false
    • :backtrace => false
    • :bulk_threshold => 1000
  • REMOTE SOURCES:

error’: Could not find RubyGem rack (~> 1.0.0) (Gem::LoadError)
from

gem install rake?

however, it should have installed rake gem because rake gem is a
dependency of rails, so…maybe “gem install rails” will get you the
right version.
=r

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