spec odd failure

I have not been able to figure out the cause of the failure. THe output is below

Failures:

/var/lib/gems/1.8/gems/rspec-core-2.8.0/lib/rspec/core/formatters/base_text_formatter.rb:165:in `pending_fixed?': undefined method `pending_fixed?' for #<NoMethodError:0x7f8072d01458> (NoMethodError)
        from /var/lib/gems/1.8/gems/rspec-core-2.8.0/lib/rspec/core/formatters/base_text_formatter.rb:19:in `dump_failures'
        from /var/lib/gems/1.8/gems/rspec-expectations-2.8.0/lib/rspec/matchers/method_missing.rb:9:in `each_with_index'
        from /var/lib/gems/1.8/gems/rspec-core-2.8.0/lib/rspec/core/formatters/base_text_formatter.rb:17:in `each'
        from /var/lib/gems/1.8/gems/rspec-core-2.8.0/lib/rspec/core/formatters/base_text_formatter.rb:17:in `each_with_index'
        from /var/lib/gems/1.8/gems/rspec-core-2.8.0/lib/rspec/core/formatters/base_text_formatter.rb:17:in `dump_failures'
        from /usr/lib/ruby/vendor_ruby/rspec/core/reporter.rb:75:in `send'
        from /usr/lib/ruby/vendor_ruby/rspec/core/reporter.rb:75:in `notify'
        from /usr/lib/ruby/vendor_ruby/rspec/core/reporter.rb:74:in `each'
        from /usr/lib/ruby/vendor_ruby/rspec/core/reporter.rb:74:in `notify'
        from /usr/lib/ruby/vendor_ruby/rspec/core/reporter.rb:23:in `conclude'
        from /usr/lib/ruby/vendor_ruby/rspec/core/reporter.rb:14:in `report'
        from /usr/lib/ruby/vendor_ruby/rspec/core/command_line.rb:24:in `run'
        from /usr/lib/ruby/vendor_ruby/rspec/core/runner.rb:55:in `run_in_process'
        from /usr/lib/ruby/vendor_ruby/rspec/core/runner.rb:46:in `run'
        from /usr/lib/ruby/vendor_ruby/rspec/core/runner.rb:10:in `autorun'
        from /usr/bin/rspec:4

I am following along with the tutorial on railstutorial.org. My test is pretty simple really (using the static pages described in the tut). Here is the file /spec/controllers/pages_controller_spec.rb

require 'spec_helper'

describe PagesController do

  describe "GET 'home'" do
    it "returns http success" do
      get 'home'
      response.should be_success
    end
  end

 
  describe "GET 'contact'" do
    it "returns http success" do
      get 'contact'
      response.should be_success
    end
  end

  describe "GET 'about'" do
    it "returns http success" do
      get 'about'
      response.should be_success
    end
  end

end

I've been able to work through failures in the past, but as I'm still new I don't know where to start on this. I've looked in the logs and have searched google for this type of error, but nothing so far. THanks for any help you may be able to offer.