rails error message from script/about

ive installed redmine as per their instructions and now im getting this
error message.

did i do something wrong or is this on their end? thank you!

# RAILS_ENV=production script/about
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:263:in
`load_missing_constant': uninitialized constant Rails::Info (NameError)
        from
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:453:in
`const_missing'
        from
/usr/local/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/about.rb:2
        from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require'
        from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
        from script/about:3