JRuby version is 1.1.2.
activerecord -jdbcsqlite3-adapter is 0.8.2.
database.yml:
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
# SQLite version 3.x
#   gem install sqlite3-ruby (not necessary on OS X Leopard)
development:
  adapter: jdbcsqlite3
  database: db/development.sqlite3
  timeout: 5000

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  adapter: sqlite3
  database: db/test.sqlite3
  timeout: 5000

production:
  adapter: sqlite3
  database: db/production.sqlite3
  timeout: 5000

####################################################
 ActiveRecord::MultiparameterAssignmentErrors in CustomersController#create

1 error(s) on assignment of multiparameter attributes

RAILS_ROOT: C:/ANetBeans6.1/OpenLaszlo/laszlocustomerapp
Application Trace | Framework Trace | Full Trace

C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2651:in `execute_callstack_for_multiparameter_attributes'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2611:in `assign_multiparameter_attributes'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2364:in `attributes='
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2130:in `initialize'
app/controllers/customers_controller.rb:43:in `new'
app/controllers/customers_controller.rb:43:in `create'
:1:in `start'

C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2651:in `execute_callstack_for_multiparameter_attributes'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2611:in `assign_multiparameter_attributes'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2364:in `attributes='
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2130:in `initialize'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/base.rb:1162:in `perform_action'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/filters.rb:580:in `call_filters'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/filters.rb:573:in `perform_action_with_filters'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/benchmarking.rb:68:in `perform_action_with_benchmark'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/1.8/benchmark.rb:293:in `measure'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/benchmarking.rb:68:in `perform_action_with_benchmark'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/rescue.rb:201:in `perform_action_with_rescue'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/caching/sql_cache.rb:13:in `perform_action_with_caching'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in `cache'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/query_cache.rb:8:in `cache'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/caching/sql_cache.rb:12:in `perform_action_with_caching'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/base.rb:529:in `process'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/filters.rb:569:in `process_with_filters'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/session_management.rb:130:in `process_with_session_management_support'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/base.rb:389:in `process'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:149:in `handle_request'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:107:in `dispatch'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:104:in `dispatch'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:120:in `dispatch_cgi'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:35:in `dispatch'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/webrick_server.rb:112:in `handle_dispatch'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/webrick_server.rb:78:in `service'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'

C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2651:in `execute_callstack_for_multiparameter_attributes'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2611:in `assign_multiparameter_attributes'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2364:in `attributes='
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/base.rb:2130:in `initialize'
app/controllers/customers_controller.rb:43:in `new'
app/controllers/customers_controller.rb:43:in `create'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/base.rb:1162:in `perform_action'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/filters.rb:580:in `call_filters'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/filters.rb:573:in `perform_action_with_filters'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/benchmarking.rb:68:in `perform_action_with_benchmark'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/1.8/benchmark.rb:293:in `measure'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/benchmarking.rb:68:in `perform_action_with_benchmark'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/rescue.rb:201:in `perform_action_with_rescue'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/caching/sql_cache.rb:13:in `perform_action_with_caching'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in `cache'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/query_cache.rb:8:in `cache'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/caching/sql_cache.rb:12:in `perform_action_with_caching'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/base.rb:529:in `process'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/filters.rb:569:in `process_with_filters'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/session_management.rb:130:in `process_with_session_management_support'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/base.rb:389:in `process'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:149:in `handle_request'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:107:in `dispatch'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:104:in `dispatch'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:120:in `dispatch_cgi'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_controller/dispatcher.rb:35:in `dispatch'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/webrick_server.rb:112:in `handle_dispatch'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/webrick_server.rb:78:in `service'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
C:/Java/jruby-1.1.2_Rails2.1.0/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
:1:in `start'

Request

Parameters:

{"authenticity_token"=>"a93d15103b8102ec736d48bfb2fa43be71b1f95f",
 "customer"=>{"zip"=>"�P�P�P�P�P�P�P",
 "address"=>"�����s�����P�|�P�|�P",
 "first_name"=>"���Y",
 "last_name"=>"����",
 "birthday(1i)"=>"2007",
 "birthday(2i)"=>"9",
 "birthday(3i)"=>"3",
 "tel"=>"�O�P�|�O�O�O�O�|�O�O�O�P",
 "mail"=>"test@test.com",
 "mail_mobile"=>"test@test_mobile.com",
 "note"=>"�e�X�g�f�[�^�P"},
 "commit"=>"Create"}

Show session dump

--- 
flash: !map:ActionController::Flash::FlashHash {}
:csrf_id: 08ac71969f1b53a39ae617c935957c26

Response

Headers:

{"Cache-Control"=>"no-cache",
 "cookie"=>[]}