Does it really hang or just not have anything to report? Go to the discovery window and query some of the services manually. After you get some valid hubs into the host cache connecting should work.
Read this page. You should be able to find the info you need from there. And the rest of it is useful as well.
Incidentally you should use the Help and Support forum for problems like this. It probably already has threads solving your problem, so using the right forum can save you some time and effort.