ArgumentError: wrong number of arguments (1 for 0)
from /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/time_with_zone.rb:146:in `to_s'
from /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/time_with_zone.rb:146:in `to_s'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/connection_adapters/abstract/quoting.rb:61:in `quoted_date'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/connection_adapters/abstract/quoting.rb:29:in `quote'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/connection_adapters/mysql_adapter.rb:223:in `quote'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:2817:in `attributes_with_quotes'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:2808:in `each'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:2808:in `attributes_with_quotes'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:2723:in `create_without_callbacks'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/callbacks.rb:237:in `create_without_timestamps'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/timestamp.rb:29:in `create'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:2699:in `create_or_update_without_callbacks'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/callbacks.rb:222:in `create_or_update'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/base.rb:2383:in `save_without_validation'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/validations.rb:1009:in `save_without_dirty'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/dirty.rb:79:in `save_without_transactions'
... 1 levels...
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:179:in `with_transaction_returning_status'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/connection_adapters/abstract/database_statements.rb:66:in `transaction'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:129:in `transaction'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:138:in `transaction'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:178:in `with_transaction_returning_status'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:146:in `save'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:158:in `rollback_active_record_state!'
from /opt/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/transactions.rb:146:in `save'