Trouble with "Set up your Internet Address" wizard in SBS 2008?
Ran into this earlier today. If you happen to be messing with your SSL Certificates and get your "Set up your Internet Address" wizard into a state that it fails, run the Fix My Network Wizard (FNCW) and you should be good to go.
In my case, the DPCW log (C:\Program Files\Windows Small Business Server\Logs\DPCW.log) was showing in its last two entries "certcoll is null or zero count" and "closing store" with the Internet Address Management Wizard (IAMW) closing out.