Crash when starting app

[eltonstewart]

When I load the app the gem crashes the app. Any ideas?

/Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require': /Users/elton/.rvm/gems/ruby-1.9.3-p392/bundler/gems/color_sort-440ea407f190/lib/color_sort/ordering.rb:7: syntax error, unexpected tLABEL, expecting ')' (SyntaxError)
    def initialize(start: nil, finish: nil)
                         ^
/Users/elton/.rvm/gems/ruby-1.9.3-p392/bundler/gems/color_sort-440ea407f190/lib/color_sort/ordering.rb:7: Can't assign to nil
    def initialize(start: nil, finish: nil)
                              ^
/Users/elton/.rvm/gems/ruby-1.9.3-p392/bundler/gems/color_sort-440ea407f190/lib/color_sort/ordering.rb:54: syntax error, unexpected keyword_end, expecting $end
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `block in require'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/bundler/gems/color_sort-440ea407f190/lib/color_sort.rb:2:in `<top (required)>'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `require'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `block (2 levels) in require'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `each'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `block in require'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `each'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `require'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/bundler-1.3.5/lib/bundler.rb:132:in `require'
    from /Users/elton/WorkSpace/fameandpartners/website/config/application.rb:7:in `<top (required)>'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/commands.rb:53:in `require'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/commands.rb:53:in `block in <top (required)>'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/commands.rb:50:in `tap'
    from /Users/elton/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.13/lib/rails/commands.rb:50:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

[Ryman]

It's a ruby 2.0 feature.