Error creating from heroku_suspenders

$ cd ../potato && rake && rake heroku:setup
(in /Users/heathertanner/Sites/rails/dancroak/potato)
config.gem: Unpacked gem cucumber-0.6.1 in vendor/gems has no specification file. Run 'rake gems:refresh_specs' to fix this.
config.gem: Unpacked gem cucumber-rails-0.2.3 in vendor/gems has no specification file. Run 'rake gems:refresh_specs' to fix this.
config.gem: Unpacked gem factory_girl-1.2.3 in vendor/gems has no specification file. Run 'rake gems:refresh_specs' to fix this.
/opt/local/bin/ruby -I"lib:test" "/opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake/rake_test_loader.rb" "test/unit/user_test.rb" 
config.gem: Unpacked gem cucumber-0.6.1 in vendor/gems has no specification file. Run 'rake gems:refresh_specs' to fix this.
config.gem: Unpacked gem cucumber-rails-0.2.3 in vendor/gems has no specification file. Run 'rake gems:refresh_specs' to fix this.
config.gem: Unpacked gem factory_girl-1.2.3 in vendor/gems has no specification file. Run 'rake gems:refresh_specs' to fix this.
/Users/heathertanner/.gem/ruby/1.8/gems/rails-2.3.3/lib/rails/gem_dependency.rb:119:Warning: Gem::Dependency#version_requirements is deprecated and will be removed on or after August 2010.  Use #requirement
Loaded suite /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake/rake_test_loader
Started
.
Finished in 0.366741 seconds.

1 tests, 2 assertions, 0 failures, 0 errors
/opt/local/bin/ruby -I"lib:test" "/opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake/rake_test_loader.rb"  
/opt/local/bin/ruby -I"lib:test" "/opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake/rake_test_loader.rb"  
/opt/local/bin/ruby -I "/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.6.3/lib:lib" "/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.6.3/bin/cucumber" --format pretty
config.gem: Unpacked gem cucumber-0.6.1 in vendor/gems has no specification file. Run 'rake gems:refresh_specs' to fix this.
config.gem: Unpacked gem cucumber-rails-0.2.3 in vendor/gems has no specification file. Run 'rake gems:refresh_specs' to fix this.
config.gem: Unpacked gem factory_girl-1.2.3 in vendor/gems has no specification file. Run 'rake gems:refresh_specs' to fix this.
/Users/heathertanner/.gem/ruby/1.8/gems/rails-2.3.3/lib/rails/gem_dependency.rb:119:Warning: Gem::Dependency#version_requirements is deprecated and will be removed on or after August 2010.  Use #requirement
can't activate cucumber (= 0.4.4, runtime) for [], already activated cucumber-0.6.1 for [] (Gem::LoadError)
/opt/local/lib/ruby/site_ruby/1.8/rubygems.rb:230:in `activate'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:35:in `polyglot_original_require'
/opt/local/lib/ruby/gems/1.8/gems/polyglot-0.3.1/lib/polyglot.rb:64:in `require'
/Users/heathertanner/.gem/ruby/1.8/gems/activesupport-2.3.3/lib/active_support/dependencies.rb:158:in `require'
/Users/heathertanner/Sites/rails/dancroak/potato/features/support/env.rb:9
/opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
/opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `polyglot_original_require'
/opt/local/lib/ruby/gems/1.8/gems/polyglot-0.3.1/lib/polyglot.rb:64:in `require'
/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.6.3/bin/../lib/cucumber/rb_support/rb_language.rb:124:in `load_code_file'
/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.6.3/bin/../lib/cucumber/step_mother.rb:85:in `load_code_file'
/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.6.3/bin/../lib/cucumber/step_mother.rb:77:in `load_code_files'
/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.6.3/bin/../lib/cucumber/step_mother.rb:76:in `each'
/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.6.3/bin/../lib/cucumber/step_mother.rb:76:in `load_code_files'
/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.6.3/bin/../lib/cucumber/cli/main.rb:48:in `execute!'
/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.6.3/bin/../lib/cucumber/cli/main.rb:20:in `execute'
/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.6.3/bin/cucumber:8
rake aborted!
Command failed with status (1): [/opt/local/bin/ruby -I "/opt/local/lib/rub...]

(See full trace by running task with --trace)