ruby on rails - Rspec, Spork, & Autotest Error -

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i'm trying teach myself rails going through http://railstutorial.org/. quit working on tutorial app last night , came today. i'm getting error when start spork server. here trace of error.

spork using rspec loading spork.prefork block... can't convert nil hash (typeerror) /usr/local/lib/ruby/gems/1.8/gems/activemodel-3.0.0/lib/active_model/validations/validates.rb:90:in merge' /usr/local/lib/ruby/gems/1.8/gems/activemodel-3.0.0/lib/active_model/validations/validates.rb:90:invalidates' /usr/local/lib/ruby/gems/1.8/gems/activemodel-3.0.0/lib/active_model/validations/validates.rb:83:in each' /usr/local/lib/ruby/gems/1.8/gems/activemodel-3.0.0/lib/active_model/validations/validates.rb:83:invalidates' /users/chietala/desktop/rails_projects/sample_app/app/models/user.rb:20 /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:454:in load' /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:454:inload_file' /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:591:in new_constants_in' /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:453:inload_file' /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:340:in require_or_load' /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:300:independ_on' /usr/local/lib/ruby/gems/1.8/gems/activesupport-3.0.0/lib/active_support/dependencies.rb:216:in require_dependency' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/engine.rb:138:ineager_load!' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/engine.rb:137:in each' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/engine.rb:137:ineager_load!' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/engine.rb:135:in each' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/engine.rb:135:ineager_load!' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/application.rb:108:in eager_load!' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/application/finisher.rb:41 /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/initializable.rb:25:ininstance_exec' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/initializable.rb:25:in run' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/initializable.rb:50:inrun_initializers' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/initializable.rb:49:in each' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/initializable.rb:49:inrun_initializers' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/application.rb:134:in initialize!' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/application.rb:77:insend' /usr/local/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/application.rb:77:in method_missing' /users/chietala/desktop/rails_projects/sample_app/spec/../config/environment.rb:5 /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:ingem_original_require' /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require' /users/chietala/desktop/rails_projects/sample_app/spec/spec_helper.rb:10 /usr/local/lib/ruby/gems/1.8/gems/spork-0.8.4/bin/../lib/spork.rb:23:inprefork' /users/chietala/desktop/rails_projects/sample_app/spec/spec_helper.rb:4 /usr/local/lib/ruby/gems/1.8/gems/spork-0.8.4/lib/spork/test_framework.rb:138:in load' /usr/local/lib/ruby/gems/1.8/gems/spork-0.8.4/lib/spork/test_framework.rb:138:inpreload' /usr/local/lib/ruby/gems/1.8/gems/spork-0.8.4/lib/spork/app_framework.rb:64:in preload' /usr/local/lib/ruby/gems/1.8/gems/spork-0.8.4/lib/spork/test_framework.rb:134:inpreload' /usr/local/lib/ruby/gems/1.8/gems/spork-0.8.4/bin/../lib/spork.rb:67:in exec_prefork' /usr/local/lib/ruby/gems/1.8/gems/spork-0.8.4/lib/spork/test_framework.rb:120:inpreload' /usr/local/lib/ruby/gems/1.8/gems/spork-0.8.4/lib/spork/run_strategy/forking.rb:25:in preload' /usr/local/lib/ruby/gems/1.8/gems/spork-0.8.4/bin/../lib/spork/runner.rb:74:inrun' /usr/local/lib/ruby/gems/1.8/gems/spork-0.8.4/bin/../lib/spork/runner.rb:9:in run' /usr/local/lib/ruby/gems/1.8/gems/spork-0.8.4/bin/spork:10 /usr/local/bin/spork:19:inload' /usr/local/bin/spork:19

luckily using git version control , in separate branch when received problem, switching master still results in error.

i'm not sure or how fix problem. have ideas?

i using 1.9.2, rails3, , rspec-rails 2.0.0rc spork-0.8.4 successfully. upgraded rspec-rails 2.0.0 , had issues.

i upgraded gemfile rspec-rails 2.0.1 , spork 0.9.0.rc2 , works again!

gemfile:

gem 'rspec-rails','>= 2.0.1' gem 'spork', '>= 0.9.0.rc2'

give shot. (you can switch old version, if doesn't help.)

check spork page on github see if there other things consider. if using 1.8.7 there may differences.

if want cutting edge (sometimes on gems):

gem 'spork', :git => 'http://github.com/timcharper/spork.git'

maybe there fix particular combo....

let me know if helps!


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