Received InvalidDedefinitionException when using wsdl to create a project

I received the error when creating a project in SoapUI 5.2.1 by browsering a wsdl. Previously I did same for a third-party wsdl and created the project fine. Attached please see the error log in SoapUI. Thank you in advance for your help!

The URL for both wsdls (previous one and current one) is https. Found the error: Failed to load url [http://......xsd]. Is this http access issue?

Also I am using citrix to access both wsdls. Both wsdls can be displayed in Internet Explorer https.