In my case the
Error loading [https://.../token?wsdl]: java.lang.Exception: Failed to load url; https://.../token?wsdl, 0
was caused by fake certificate. If you get the following in browser
"There is a problem with this website’s security certificate."
this is the case.
The resolution was to import a certificate to
C:\Program Files (x86)\SmartBear\SoapUI-5.0.0\jre\lib\security\cacerts
Which is default java used by SOAPUI