[SOLVED] Getting spork to work with Ruby 1.9.2/3 + Rails 3.1 + Rspec?

There's quite a few solid tutorials out there, and I haven't had too much trouble getting this working in the past. But, after hours of trying, I must be missing something.

I've completed the standard installation instructions, and started up the spork server:

Using RSpec
Preloading Rails environment
Loading Spork.prefork block...
Spork is ready and listening on 8989!

Looking good.

Then, I hop over to a new tab and run my specs:

$ rspec spec

This command returns nothing after running for only a split second. So I jump back to the spork server to see what happened and get:

Using RSpec
Preloading Rails environment
Loading Spork.prefork block...
Spork is ready and listening on 8989!
Running tests with args ["--color", "spec"]...
Exception encountered: #<DRb::DRbConnError: druby://localhost:56736 - #<Errno::ECONNREFUSED: Connection refused - connect(2)>>
backtrace:
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:736:in `rescue in block in open'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:730:in `block in open'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:729:in `each'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:729:in `open'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1191:in `initialize'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1171:in `new'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1171:in `open'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1087:in `block in method_missing'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1105:in `with_friend'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1086:in `method_missing'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1074:in `respond_to?'
/Users/briancody/.rvm/gems/ruby-1.9.3-p0@scholastica/gems/spork-0.9.0.rc9/lib/spork/run_strategy/forking.rb:10:in `block in run'
/Users/briancody/.rvm/gems/ruby-1.9.3-p0@scholastica/gems/spork-0.9.0.rc9/lib/spork/forker.rb:21:in `block in initialize'
/Users/briancody/.rvm/gems/ruby-1.9.3-p0@scholastica/gems/spork-0.9.0.rc9/lib/spork/forker.rb:18:in `fork'
/Users/briancody/.rvm/gems/ruby-1.9.3-p0@scholastica/gems/spork-0.9.0.rc9/lib/spork/forker.rb:18:in `initialize'
/Users/briancody/.rvm/gems/ruby-1.9.3-p0@scholastica/gems/spork-0.9.0.rc9/lib/spork/run_strategy/forking.rb:9:in `new'
/Users/briancody/.rvm/gems/ruby-1.9.3-p0@scholastica/gems/spork-0.9.0.rc9/lib/spork/run_strategy/forking.rb:9:in `run'
/Users/briancody/.rvm/gems/ruby-1.9.3-p0@scholastica/gems/spork-0.9.0.rc9/lib/spork/server.rb:48:in `run'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1548:in `perform_without_block'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1508:in `perform'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1586:in `block (2 levels) in main_loop'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1582:in `loop'
/Users/briancody/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/drb/drb.rb:1582:in `block in main_loop'
Done.

For some reason, drb is failing to connect? I've googled like crazy, but there just doesn't seem to be anything helpful out there.

Some possible clues

The port (in this case 56736) changes every time I attempt to run the suite
I get the same result on both ruby 1.9.2 and ruby 1.9.3
I'm using a mac (snow leopard) and firewalls are disabled
I've tried it on a totally different mac (also snow leopard) with the same result.
I'm using the latest version of cucumber, rspec, and spork.
I also setup cucumber spork and it failed the same way.

As you can see, I've been banging away at it for a while. My project uses a lot of gems and not having spork makes testing really, really terrible. Please help...

UPDATE

Here's my spec_helper:

require 'spork'

Spork.prefork do
  ENV["RAILS_ENV"] ||= 'test'
  require File.expand_path("../../config/environment", __FILE__)
  require 'rspec/rails'
  require "email_spec"
  require 'webmock/rspec'
  require 'vcr'
  require 'database_cleaner'

  include Devise::TestHelpers
  include EmailSpec::Helpers
  include EmailSpec::Matchers

  # Stub all updates to search indexes
  class Profile
    def update_tank_indexes ; end
    def delete_tank_indexes ; end
  end
  class Journal
    def update_tank_indexes ; end
  end

  # Apparently rspec doesn't understand <tt>main_app</tt> so stub it out.
  def main_app ; self ; end


  # Requires supporting ruby files with custom matchers and macros, etc,
  # in spec/support/ and its subdirectories.
  Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}

  RSpec.configure do |config|

    config.mock_with :rspec

    # If you're not using ActiveRecord, or you'd prefer not to run each of your
    # examples within a transaction, remove the following line or assign false
    # instead of true.
    config.use_transactional_fixtures = true
    config.extend VCR::RSpec::Macros

    # Always clean the database after running describe/context blocks to ensure a
    # consistent state. This is especially important when using the <tt>rspec-set</tt>
    # method. This method creates setup object once -- and only once -- proir to
    # running an entire describe/context block. In this way, it's similar to using
    # <tt>before(:all)</tt> except that <tt>set</tt> is better because:
    #
    #   * It automatically reloads the object before each example, making it much
    #     safer than before(:all) which can cause bugs if you're not careful.
    #   * It's lazily evaluated.
    #
    # You can read more at:
    #
    #   * eggsonbread.com/2010/05/25/speed-up-your-specs-with-set/
    #   * github.com/pcreux/rspec-set
    #
    # Note: This is not part of default configuration. Be sure to retain this snippet
    # when upgrading.
    #
    DatabaseCleaner.strategy = :truncation
    config.before(:all) do
      DatabaseCleaner.clean
    end
    config.after(:suite) do
      DatabaseCleaner.clean
    end
  end

end

Spork.each_run do
  # This code will be run each time you run your specs.
end