SoapUI 5.3.0 Mac hangs on any use after installation

Question

SoapUI 5.3.0 (latest open source version) Mac hangs on clean-install on MacOS 10.12.3 - with all presets suggested by the installer.

I tried rebooting & installing a

Answer 1

I had the same issue with Mac OS 10.12.5, and the proxy was the problem, I just disabled the proxy and it worked!]1