empty project

I create a new soap project in soapUI open source,

Everyting seems fine. I save the project then close the app.

After I re-open the app, I see only project name, and project seems empty, Everthing is missing. 

this is my wsdl url

https://ktu.onlineservice.creditreform.de/webservice/0600-0021/soap12/messages.wsdl