The latest rpm (0.1.6-2) works find. When attempting to start the latest source (after and including 90b83222b7b9b819d1b0ea8847fdda66d70a4088) I get the following errors:

=> Booting WEBrick
=> Rails 2.3.10 application starting on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/usr/lib/ruby/1.8/thread.rb:424:in `push': You have a nil object when you didn't expect it! (NoMethodError)
You might have expected an instance of Array.
The error occurred while evaluating nil.length from /usr/lib/ruby/1.8/webrick/server.rb:51:in `initialize'
from /usr/lib/ruby/1.8/webrick/server.rb:51:in `times'
from /usr/lib/ruby/1.8/webrick/server.rb:51:in `initialize'
from /usr/lib/ruby/1.8/webrick/httpserver.rb:24:in `initialize'
from /opt/foreman/vendor/gems/rack-1.1.0/lib/rack/handler/webrick.rb:10:in `new'
from /opt/foreman/vendor/gems/rack-1.1.0/lib/rack/handler/webrick.rb:10:in `run'
from /opt/foreman/vendor/rails/railties/lib/commands/server.rb:111
from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from ./script/server:3

From passenger:

• Exception NoMethodError in application (undefined method `each' for nil:NilClass) (process 29047):
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/rack/request_handler.rb:85:in `process_request'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/abstract_request_handler.rb:203:in `main_loop'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/railz/application_spawner.rb:340:in `start_request_handler'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/railz/application_spawner.rb:298:in `handle_spawn_application'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/utils.rb:181:in `safe_fork'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/railz/application_spawner.rb:296:in `handle_spawn_application'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/abstract_server.rb:337:in `__send__'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/abstract_server.rb:337:in `main_loop'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/abstract_server.rb:187:in `start_synchronously'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/abstract_server.rb:154:in `start'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/railz/application_spawner.rb:192:in `start'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/spawn_manager.rb:257:in `spawn_rails_application'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/abstract_server_collection.rb:126:in `lookup_or_add'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/spawn_manager.rb:251:in `spawn_rails_application'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/abstract_server_collection.rb:80:in `synchronize'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/abstract_server_collection.rb:79:in `synchronize'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/spawn_manager.rb:250:in `spawn_rails_application'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/spawn_manager.rb:153:in `spawn_application'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/spawn_manager.rb:282:in `handle_spawn_application'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/abstract_server.rb:337:in `__send__'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/abstract_server.rb:337:in `main_loop'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/lib/phusion_passenger/abstract_server.rb:187:in `start_synchronously'
  from /usr/lib/ruby/gems/1.8/gems/passenger-2.2.2/bin/passenger-spawn-server:61

gem info:

• LOCAL GEMS ***

archive-tar-minitar (0.5.2)
facter (1.3.8)
fastthread (1.0.7)
ffi (0.6.3)
json (1.5.1)
json_pure (1.4.3)
libvirt (0.2.0)
mime-types (1.16)
mocha (0.9.12)
mysql (2.7.4)
nokogiri (1.4.4)
passenger (2.2.11)
puppet (0.24.6)
rack (1.0.1)
rake (0.8.7)
rest-client (1.4.0)
rr (1.0.2)
shoulda (2.11.3)
sqlite3-ruby (1.2.4)