I copied a working theme (making an overhaul).. and made nominal changes. Now, when viewing the index, all php code shows up as html comments... for example
<?php get_header(); ?>
which is the first line of code on index.php, shows up as this when loading the website:
<!--?php get_header(); ?-->
Anyone have a clue what is causing this? All php blocks of <?php ?> get reformatted into this html comment format, causing the entire website to be blank.