chef-expander 10.14.2 won't start

chef-expander-10.14.2-startup-error.txt

[2012-09-27T14:31:49-04:00] INFO: Processing service[chef-expander] action start (chef-server::rubygems-install line 224)

================================================================================
Error executing action `start` on resource 'service[chef-expander]'
================================================================================

Mixlib::ShellOut::ShellCommandFailed
------------------------------------
Expected process to exit with [0], but received '1'
---- Begin output of /sbin/service chef-expander start ----
STDOUT: Starting chef-expander: [FAILED]
STDERR: /usr/lib/ruby/site_ruby/1.8/rubygems.rb:233:in `activate': can't activate eventmachine (~> 0.12.10, runtime) for ["chef-expander-10.14.2"], already activated eventmachine-1.0.0 for ["amqp-0.6.7", "chef-expander-10.14.2"] (Gem::LoadError)
	from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:249:in `activate'
	from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:248:in `each'
	from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:248:in `activate'
	from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:1082:in `gem'
	from /usr/sbin/chef-expander:18
---- End output of /sbin/service chef-expander start ----
Ran /sbin/service chef-expander start returned 1

Resource Declaration:
---------------------
# In /tmp/vagrant-chef-1/chef-solo-1/cookbooks/chef-server/recipes/rubygems-install.rb

223: 
224:     service "#{svc}" do
225:       supports :status => true
226:       action [ :enable, :start ]
227:     end
228:   end

Compiled Resource:
------------------
# Declared in /tmp/vagrant-chef-1/chef-solo-1/cookbooks/chef-server/recipes/rubygems-install.rb:224:in `from_file'

service("chef-expander") do
  updated true
  startup_type :automatic
  pattern "chef-expander"
  service_name "chef-expander"
  supports {:status=>true}
  recipe_name "rubygems-install"
  retry_delay 2
  cookbook_name :"chef-server"
  retries 0
  action [:enable, :start]
end

[2012-09-27T14:31:50-04:00] ERROR: Running exception handlers
[2012-09-27T14:31:50-04:00] ERROR: Exception handlers complete
[2012-09-27T14:31:52-04:00] FATAL: Stacktrace dumped to /tmp/vagrant-chef-1/chef-stacktrace.out
[2012-09-27T14:31:52-04:00] FATAL: Mixlib::ShellOut::ShellCommandFailed: service[chef-expander] (chef-server::rubygems-install line 224) had an error: Mixlib::ShellOut::ShellCommandFailed: Expected process to exit with [0], but received '1'
---- Begin output of /sbin/service chef-expander start ----
STDOUT: Starting chef-expander: [FAILED]
STDERR: /usr/lib/ruby/site_ruby/1.8/rubygems.rb:233:in `activate': can't activate eventmachine (~> 0.12.10, runtime) for ["chef-expander-10.14.2"], already activated eventmachine-1.0.0 for ["amqp-0.6.7", "chef-expander-10.14.2"] (Gem::LoadError)
	from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:249:in `activate'
	from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:248:in `each'
	from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:248:in `activate'
	from /usr/lib/ruby/site_ruby/1.8/rubygems.rb:1082:in `gem'
	from /usr/sbin/chef-expander:18
---- End output of /sbin/service chef-expander start ----
Ran /sbin/service chef-expander start returned 1
Chef never successfully completed! Any errors should be visible in the
output above. Please fix your recipes so that they properly complete.