saddacracker

I had the same issue. It was my theme causing the problem. I made a copy of my theme in the same directory and never renamed the theme name in the style.css so it was causing a conflict. Make sure you rename the them in the root style.css!

/*
Theme Name: My Themes Name
Theme URI: https://dev.saddacrackers.com/#
Author: John Cardwell
Author URI: https://dev.saddacrackers.com
Description: Developed for Parker LePla based on Twenty Eleven by the WordPress Team
Version: 1.1
License: GNU General Public License
License URI: license.txt
Tags: custom, fixed, parker-lepla
*/

Found this:
In some (or all?) server configurations, mod_rewrite requires followsymlinks to be enabled, or it will crater with a 500-Server Error.

If your mod_rewrite code works without the options +followsymlinks directive, that means that your server configuration file has enabled them already, and you won’t need that directive in your .htaccess files.

I try to remember to include it in posts here anyway, just so someone asking mod_rewrite questions won’t have a problem, and either give up, or have to post again.

link

Thank you, xabhishek!
Your solution worked. I have no idea why, though ??