Wow! Thanks Krisrr3 for posting update with your fix. This was extremely frustrationg for me. I would get "does not close tag" error no matter which endpoint I tried. I installed latest SoapUI 5.0 Pro and even uninstalled all versions to do a "cleaner" install. No change. I even tried on my laptop and could import WSDL for new project no problem using same ethernet cord so I know it was local machine configuration. What's worse is that my desktop used to work just fine! AAARG!
After >4 hours of searching and fiddling around your comment lead me to the root cause: My desktop had a manual proxy configured that was no longer supported by my IT department. My laptop was configured with "Automatic" proxy selected and no manual configuration present. All I needed was a pointer toward proxy configuration.
FIX STEPS: 1. Click File>Options, then click Proxy Settings 2. Change proxy settings to match SoapUI on a working system OR talk to your network admin to determine what proxy server should or should not be used to reach your desired target URL. 3. Retry importing WSDL.
SUGGESTION: SoapUI should detect "does not close tag" error and mention below the error "File>Preferences>HTTP Proxy may be configured incorrectly." in addition to the raw and ambiguous error.
FYI Bonus TIP: Google search worked much better than Bing search for "does not close tag".
We do have something internally filed for better error messages when related to configuration such as proxy for instance, SOAP-1087. Thanks for sharing how to get around that error, I will add this as an example.