hmm I got the same message with CXF 2.7.2
I came back and added annotations as part of creating the wizard service endpoint interface (I also created SEI), and it worked.
I think because neither my implementation nor the service endpoint interface had annotations initially, WSDL could not be generated, and the wizard could not continue, instead it generated the message “The choice should be WSDL” ... or at least this is my faith at the moment :)
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