Rails App Breaks Using espace-neverblock 0.1.6.1 and rails 2.3.3

[silvamerica]

Any time a record is saved, this error appears:

NoMethodError: undefined method assert_valid_keys' for true:TrueClass from /var/www/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:114:intransaction'
from /usr/lib/ruby/gems/1.8/gems/espace-neverblock-0.1.6.1/lib/never_block/frameworks/activerecord.rb:18:in transaction' from /var/www/vendor/rails/activerecord/lib/active_record/transactions.rb:228:inwith_transaction_returning_status'
from /var/www/vendor/rails/activerecord/lib/active_record/transactions.rb:196:in save' from /var/www/vendor/rails/activerecord/lib/active_record/transactions.rb:208:inrollback_active_record_state!'
from /var/www/vendor/rails/activerecord/lib/active_record/transactions.rb:196:in `save'
from (irb):1