/Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/associations.rb:37:in `embedded_many?': undefined method `associations' for nil:NilClass (NoMethodError)
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/associations.rb:42:in `embedded_one?'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/atomicity.rb:51:in `_sets'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/atomicity.rb:21:in `_updates'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/activesupport-3.0.0.rc/lib/active_support/core_ext/class/attribute.rb:51:in `inject'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/atomicity.rb:20:in `each'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/atomicity.rb:20:in `inject'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/atomicity.rb:20:in `_updates'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/persistence/update.rb:61:in `update'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/persistence/update.rb:45:in `persist'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/activesupport-3.0.0.rc/lib/active_support/callbacks.rb:408:in `_run_update_callbacks'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/activesupport-3.0.0.rc/lib/active_support/callbacks.rb:93:in `send'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/activesupport-3.0.0.rc/lib/active_support/callbacks.rb:93:in `run_callbacks'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/persistence/update.rb:44:in `persist'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/activesupport-3.0.0.rc/lib/active_support/callbacks.rb:408:in `_run_save_callbacks'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/activesupport-3.0.0.rc/lib/active_support/callbacks.rb:93:in `send'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/activesupport-3.0.0.rc/lib/active_support/callbacks.rb:93:in `run_callbacks'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/persistence/update.rb:43:in `persist'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/persistence.rb:79:in `update'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/persistence.rb:125:in `upsert'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/persistence.rb:70:in `save!'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/associations/proxy.rb:15:in `send'
	from /Users/joey/.rvm/gems/ree-1.8.7-2010.02@mongo/gems/mongoid-2.0.0.beta.15/lib/mongoid/associations/proxy.rb:15:in `method_missing'
	from scratch.rb:47