gistfile1.txt

You might have expected an instance of Array.
The error occurred while evaluating nil.map
/opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:272:in `activate'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:35:in `require'
/Users/james/Sites/difftracker/vendor/rails/activeresource/lib/../../activesupport/lib/active_support/dependencies.rb:167:in `require'
/Users/james/Sites/difftracker/vendor/rails/activeresource/lib/../../activesupport/lib/active_support/dependencies.rb:537:in `new_constants_in'
/Users/james/Sites/difftracker/vendor/rails/activeresource/lib/../../activesupport/lib/active_support/dependencies.rb:167:in `require'

% gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 1.3.5
  - RUBY VERSION: 1.8.7 (2009-06-12 patchlevel 174) [i686-darwin9]
  - INSTALLATION DIRECTORY: /opt/local/lib/ruby/gems/1.8
  - RUBY EXECUTABLE: /opt/local/bin/ruby
  - EXECUTABLE DIRECTORY: /opt/local/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86-darwin-9
  - GEM PATHS:
     - /opt/local/lib/ruby/gems/1.8
     - /Users/james/.gem/ruby/1.8
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - :sources => ["http://gems.rubyforge.org", "http://gems.github.com/"]
  - REMOTE SOURCES:
     - http://gems.rubyforge.org
     - http://gems.github.com/