SOAP, WSDL and LiveDepartureBoards

All,

I am attempting to use the SOAP interface to the UK's Live Departure Board service, documented at http://www.livedepartureboards.co.uk/ldbws/. I have no previous experience of WSDL and would appreciate input as to what I'm doing wrong.

Following instructions at http://www.ruby-forum.com/topic/58459, I am using the following code:

   url = "http://www.livedepartureboards.co.uk/ldbws/wsdl.aspx"
   service = SOAP::WSDLDriverFactory.new(url)

I consistently get the following error:

   NoMethodError: undefined method `targetnamespace=' for #<WSDL::XMLSchema::Schema:0x..fdb3b9c04>

Can anyone help me troubleshoot?

Regards,

Peter