The server manager for 10.1 no longer works in Chrome because it uses Dojo 1.6 and Chrome recently broke the 1.6 implementation of dojo.query. Usually when something "hangs", it's indicative of a JavaScript error on page. To confirm this, take a look at the JavaScript console. In Chrome, click the menu button (three lines in the upper-right corner) and choose Tools > JavaScript console. When I do this, I see a slew of errors for the server manager.
This may or may not be the problem you're seeing. To confirm, I'd give Firefox a try. I've been able to use the Server 10.1 manager in the latest version of Firefox.
_Nik