I can upload images and I see them in the media library fine. I can use the uploaded image in the nextgen gallery and they show properly in posts that way. I can select an image to use as a featured image, but I get this broken link:

The page shows a broken image as well.

I do have some security settings in the .htaccess file to prevent others from using images i post on my site on other sites, but I took it all out and I still have the same issue:

<IfModule mod_security.c>
SecFilterEngine Off
SecFilterScanPOST Off
</IfModule>

RewriteEngine on

RewriteCond %{HTTP_REFERER} !^http://adellisa.com/.*$ [NC]
RewriteRule .*\.(jpg|jpeg|gif|png|bmp)$ – [F,NC]

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

I changed the theme, and the featured image is not working on a standard theme either. So perhaps the issue is deeper into WP