Error using launchy with cucumber and spork.

explain.markdown

Description

This error occurs when I run this feature with spork. If I run it without spork, then it works as expected.

view_pages.feature

Feature: View Pages
  In Order to view content pages
  As a guest
  I want to view pages

  Scenario: View a page                     # features/view_pages.feature:6
    Given a page exists with the following: # features/step_definitions/page_steps.rb:1
      | body  | This is a test page! |
      | title | Test Page            |
    And I go to the page                    # features/step_definitions/web_steps.rb:48
    Then I should see "Test Page"           # features/step_definitions/web_steps.rb:105
    And I should see "This is a test page!" # features/step_definitions/web_steps.rb:105
    And show me the page                    # features/step_definitions/web_steps.rb:209
Exception encountered: #<TypeError: incompatible marshal file format (can't be read)
	format version 4.8 required; 0.0 given>
backtrace:
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:585:in `load'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:585:in `block in load'
<internal:prelude>:10:in `synchronize'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:581:in `load'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:632:in `recv_reply'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:918:in `recv_reply'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1197:in `send_message'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1088:in `block (2 levels) in method_missing'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1172:in `open'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1087:in `block in method_missing'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1105:in `with_friend'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1086:in `method_missing'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/formatter/pretty.rb:152:in `step_name'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:174:in `block in send_to_all'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:172:in `each'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:172:in `send_to_all'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:167:in `broadcast'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:112:in `visit_step_name'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:105:in `block in visit_step_result'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:164:in `broadcast'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:104:in `visit_step_result'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/step_invocation.rb:47:in `visit_step_result'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/step_invocation.rb:43:in `accept'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:99:in `block in visit_step'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:164:in `broadcast'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:98:in `visit_step'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/step_collection.rb:15:in `block in accept'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/step_collection.rb:14:in `each'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/step_collection.rb:14:in `accept'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:93:in `block in visit_steps'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:164:in `broadcast'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:92:in `visit_steps'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/scenario.rb:53:in `block (2 levels) in accept'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/runtime.rb:79:in `block (2 levels) in with_hooks'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/runtime.rb:95:in `before_and_after'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/runtime.rb:78:in `block in with_hooks'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/runtime/support_code.rb:115:in `call'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/runtime/support_code.rb:115:in `block (3 levels) in around'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/language_support/language_methods.rb:13:in `block in around'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/language_support/language_methods.rb:95:in `call'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/language_support/language_methods.rb:95:in `execute_around'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/language_support/language_methods.rb:12:in `around'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/runtime/support_code.rb:114:in `block (2 levels) in around'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/runtime/support_code.rb:112:in `call'
/Users/nick/.rvm/gems/ruby-1.9.2-p/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:573:in `load'180@carob/gems/cucumber-0.10.2/lib/cucumber/runtime/support_code.rb:112:in `around'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/runtime.rb:90:in `around'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/runtime.rb:77:in `with_hooks'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/scenario.rb:51:in `block in accept'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/scenario.rb:106:in `with_visitor'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/scenario.rb:45:in `accept'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:51:in `block in visit_feature_element'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:164:in `broadcast'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:50:in `visit_feature_element'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/feature.rb:40:in `block in accept'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/feature.rb:39:in `each'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/feature.rb:39:in `accept'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:20:in `block in visit_feature'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:164:in `broadcast'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:19:in `visit_feature'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/features.rb:29:in `block in accept'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/features.rb:17:in `each'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/features.rb:17:in `each'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/features.rb:28:in `accept'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:14:in `block in visit_features'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:164:in `broadcast'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/ast/tree_walker.rb:13:in `visit_features'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@caro: b/gems/cucumber-0.10.2/lib/cucumber/runtime.rb:45:in `run!'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/cucumber-0.10.2/lib/cucumber/cli/main.rb:43:in `execute!'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/spork-0.9.0.rc5/lib/spork/test_framework/cucumber.rb:24:in `run_tests'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/spork-0.9.0.rc5/lib/spork/run_strategy/forking.rb:13:in `block in run'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/spork-0.9.0.rc5/lib/spork/forker.rb:21:in `block in initialize'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/spork-0.9.0.rc5/lib/spork/forker.rb:18:in `fork'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/spork-0.9.0.rc5/lib/spork/forker.rb:18:in `initialize'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/spork-0.9.0.rc5/lib/spork/run_strategy/forking.rb:9:in `new'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/spork-0.9.0.rc5/lib/spork/run_strategy/forking.rb:9:in `run'
/Users/nick/.rvm/gems/ruby-1.9.2-p180@carob/gems/spork-0.9.0.rc5/lib/spork/server.rb:48:in `run'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1558:in `perform_without_block'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1518:in `perform'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1592:in `block (2 levels) in main_loop'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1588:in `loop'
/Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1588:in `block in main_loop'too large packet 67654656
 (DRb::DRbConnError)
	from /Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:632:in `recv_reply'
	from /Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:918:in `recv_reply'
	from /Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1197:in `send_message'
	from /Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1088:in `block (2 levels) in method_missing'
	from /Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1172:in `open'
	from /Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1087:in `block in method_missing'
	from /Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1105:in `with_friend'
	from /Users/nick/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/drb/drb.rb:1086:in `method_missing'

I started a clean rails project and narrowed it down. I don't know how, or why, but if growl is installed, it fails, without growl, everything seems to be fine. I have no Idea how or why that would interfere. I've uploaded the test app here: https://github.com/NickClark/Launchy-Test

yeah, for me this is where ruby kind of sucks--it is flakey on the edge cases. If you get to the bottom of it it might help others with similar problems.
Cheers!
-r