I was searching for a solution for my HTTP Error all over the place and absolutely nothing worked. I must have tried 20 "solutions".
In the end, it turned out that the SSL certificate for the site was creating problems. When we disabled SSL for the site, the HTTP error problem went away.
Now that begs the question - am I doomed to HTTP Errors on a site that uses security certificates? The strange thing, which is confusin, was that this problem wasn't present before we updated to WordPress 3.
I don't get this. Any ideas?
Eivind F S