Installed WP 2.8.4 on my server. Can’t login to WP-admin

Installed WP 2.8.4 on my server. I’ve installed WP hundreds of times and never had a problem. Set up a new domain, installed WP thru Fantastico. Everything went great, email sent with my login details. Problem is I can’t login to https://mydomain.com/wp-admin/. I get a 404 file not found error.

I tried deleting the install and doing it again. Same problem. (spry) I tried doing an install on another host (reseller zoom). Same problem.

Is this 2.8.4 a bad build? Anyone else having this problem with a new install? All of my old installs of WP work just fine.