Adds a Dashboard widget that displays all included theme files. Useful for tracking down bugs because you can see every file that's being loaded in the admin.

show-included-files-widget.php

function add_show_inc_file_widget() {
  wp_add_dashboard_widget('included-files', 'Show Included Theme Files', 'show_included_theme_files');
}
add_action('wp_dashboard_setup', 'add_show_inc_file_widget' );
function show_included_theme_files(){
	$included_files = get_included_files();
	
	foreach ($included_files as $filename) {
		if (strpos($filename, "THEME-FOLDER-NAME")) echo $filename."<br />";
	}
}