soapUI 4.5.0: java.net.SocketException: Permission denied

I'm having the same issue with 4.5.1 (although, this is a fresh install, not upgrading from a previous version).
Snooping traffic at the destination shows no connection attempt, which indicated that it's the client side (where SoapUi is installed) that is the issue.
However, I have a McAfee firewall thing going on to, so I'm trying to get that disabled too (need corporate IT to do that for me, so I'm still waiting). I'll post back if I find that's the issue.