I need help. My site was working fine. I had been trying to use pretty permalinks with no luck. I was on the Permalink settings page, going to try one more change. I saw the "upgrade" link and clicked on it to download the new version. Then I went to the site and the whole thing is broken.
Honestly, I don't know what I did and I have no idea how to get back.
Any genius out there who can help?