Then, I follow the instructions in the install.html file. After I've configured administrator's password, I'm redirected to the page, where I'm supposed to enter the administrator's login and password. I do that, but instead of showing me the administrative page, it again shows me the page, where there are entry fields for username and password.

In the previous message I've entered h-t-t-p://server:81/username

I'm a little confused about the other thing. It sounds like you were able to set the administrator password with no problem. Then you are redirected to the administrator login page, you enter the username "administrator" and the password you set, and then what? It sounds like you're being sent back to the same administrator login page and aren't seeing any error messages. Is that right?

The first thing I should probably ask is: do you have cookies enabled in you web browser? Currently, the login routine sets a cookie in addition to storing information in the server session. The original idea was to try to avoid session hijacking in shared hosting situations, although in retrospect, I'm not sure it was worth the trouble.

Other possibilities are that the server redirect is failing for some reason (in that case, try going directly to the URL), or you're unable to write to PHP's $_SESSION variable (not sure what would cause that), or you used some wacky password that's all whitespace. I can't really think of anything else. Some more information would be helpful, if you can come up with any.

The other thing you should be aware of is that the routine that computes URLs currently doesn't account for non-standard web server ports, so once you get past the admin pages, using port 81 *will* give you problems. I'll try to fix that before posting the next update. It shouldn't be too hard to fix (I hope).