I'm logged in, but no longer able to get to my /admin section or any other page on either the HTTP or HTTPS version of my site. Error message:The requested URL /user/1 was not found on this server.
Some background information leading up to this: I'm using Drupal 6.12, Clean URLs and a self-signed SSL certificate. A week or so ago I enabled the Secure Pages module, but the radio button to enable secure pages was greyed out and couldn't be selected. I also got an error when trying to get to the secure version of my website. Searching the Drupal forums seemed to point me to my web site host configuration, so I requested their assistance in determining if PHP and .htaccess are configured properly on my site. They checked my domain and found that my website was not using a dedicated IP address.
They changed my site to use a (new dedicated) IP address, had me create a new self-signed certificate, which they installed "through WHM". They said the "issue has now been fixed", but it's left my site totally broken.
I'm not sure what to try next, so any help will be greatly appreciated.