WSDL ERROR

I am trying to add an xcelsius template to my ondemand dashboard. I am following the below guide to connect to the dataset I want to use: http://wiki.sdn.sap.com/wiki/display/BOBJ/AddingaTemplate

When I get to step 6 and copy my datasets url into the WSDL URL input box, I get the following error:

Error in parsing WSDL or it is an external WSDL!

What does this mean and how can I fix this?