Problem with registered copy

Yesterday I registered my copy of Parallels 4.0. My trial license had worked perfectly and I thought the update was great. Today when I tried to log in I was told that "Your Mac is currently unavailable. Make sure that it is connected to the network and Parallels Desktop is running on it." Does anyone know what this means?

What this means for me right now is that Parallels will not run and that my data for work is unavailable to me.

Nick Finke
[email protected]