Wish I knew I'm having the same problems. And after scouring the internet and Extensis' knowledge base searching for an explanaton of this error msg: 'The server at address '<ip address>' cannot be found. Please check the location and try again.'
I also tried installing Suitcase Server on a Windows XP box and connecting using the 9.2.1 client on the local WinXP machine to try to administer the server. Of course in this scenario I had no problem connecting to the server, however, I still couldnt see the server as a client running on a OS X G5. I realize theres SOMETHING I have to be missing here, but I still cant put my finger on it. Does anyone have any ideas?