setting the enable_dead_lettering_on_message_expiration member on the Queue when calling service bus create_queue results in an error.

MSDN doc at http://msdn.microsoft.com/en-us/library/windowsazure/hh780727

shows an example with xml that uses element name 'DeadLetteringOnMessageExpiration'
but the azure library code uses 'EnableDeadLetteringOnMessageExpiration' which may explain the error.

See test_create_queue_with_options in test_servicebusservice.py, make sure you have the latest version where this member assignment is commented out.