Fixed an issue where the creation of a new site would fail if there was an upper case character in the site name (!).
Also, I can see that a bunch of people have tried this out and pretty much no one has gotten anywhere (even where the above bug was not encountered.) I think I understand some of the problems people are probably running into. It's not completely clear what to do (to put it mildly) once you make a site. The front page exists, but there is no content on it. I made some changes today which address a good part of these issues, but I still have a few more ideas to implement. So if you gave up wait for my next update and please try again - it will be a lot more straightforward soon.