Multi-site first says I'm not allowed to use subdirectories, then won't let me use subdomains

[beatpanda]

First, I should say I have a non-standard setup- I'm using the latest versions of nginx and PHP via fastCGI, using PHP-FPM as the fastCGI process manager.

I went to enable multisite. I added all the lines required in my wp-config.php, and I have what should be the correct rewrite rules in my configuration (they work with WPMU for subdomains, anyway), and everything seemed to work fine.

On the "enable multisite" page, it told me that I didn't have the option to use sub-directories because my install was more than a month old. I wanted sub-domains anyway, so that was fine. Multi-site turned on and everything seemed OK.

However, when I went to actually add a site, it only let me use sub-directories. The sub-directories worked as expected, but it seemed especially odd since it told me I *couldn't* use sub-directories in the first place.

Also-

-I'm using the nightly builds of 3.0
-The OS on my server is Ubuntu 8.10
-There's a working MU install on the same server

never mind, got it working. all my fault. carry on.

Since Nginx is growing so much, maybe you could expand on what your error was and how you got it working. Might help other people too :)