Locating Visual Editor Changes in a Theme

Since 3.9 a theme I work with has troubles displaying the visual editor. The theme no longer supplies support nor is the author contactable. It was purchased through ThemeForest, so it is up to their standards. I am trying to look for these changes that are causing the visual editor to not work in this specific theme but have limited knowledge as to where it is placed normally or what phrases I can search for.The only thing I’ve found thus far and commented out with no change was

$wp_editor_settings = array(
'wpautop' => true, // Default
'textarea_rows' => 8,
'tinymce' => array( 'plugins' => 'wordpress' )
);

Any help would be greatly appreciated, thanks.