/home/giant/.rvm/gems/ruby-1.9.2-p290/gems/bson-1.1.5/lib/bson/bson_c.rb:24:in `serialize': Date is not currently supported; use a UTC Time instance instead. (BSON::InvalidDocument)
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/bson-1.1.5/lib/bson/bson_c.rb:24:in `serialize'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/mongo-1.1.5/lib/mongo/cursor.rb:399:in `construct_query_message'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/mongo-1.1.5/lib/mongo/cursor.rb:380:in `send_initial_query'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/mongo-1.1.5/lib/mongo/cursor.rb:348:in `refresh'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/mongo-1.1.5/lib/mongo/cursor.rb:72:in `next_document'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/mongo-1.1.5/lib/mongo/collection.rb:224:in `find_one'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/plucky-0.3.7/lib/plucky/query.rb:62:in `find_one'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/plucky-0.3.7/lib/plucky/query.rb:79:in `first'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/mongo_mapper-0.8.6/lib/mongo_mapper/plugins/querying/decorator.rb:29:in `first'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/mongo_mapper-0.8.6/lib/mongo_mapper/plugins/querying.rb:94:in `find_one'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/mongo_mapper-0.8.6/lib/mongo_mapper/plugins/querying.rb:16:in `find_by_id'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/mongo_mapper-0.8.6/lib/mongo_mapper/plugins/associations/belongs_to_proxy.rb:19:in `find_target'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/mongo_mapper-0.8.6/lib/mongo_mapper/plugins/associations/proxy.rb:118:in `load_target'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/mongo_mapper-0.8.6/lib/mongo_mapper/plugins/associations/proxy.rb:108:in `method_missing'
	from testexport.rb:196:in `block (2 levels) in <top (required)>'
	from testexport.rb:195:in `each'
	from testexport.rb:195:in `block in <top (required)>'
	from testexport.rb:187:in `each'
	from testexport.rb:187:in `<top (required)>'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands/runner.rb:48:in `eval'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands/runner.rb:48:in `<top (required)>'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands.rb:39:in `require'
	from /home/giant/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands.rb:39:in `<top (required)>'
	from script/rails:9:in `require'
	from script/rails:9:in `<main>'