Site Breaks When Trying to Add Child Theme

Is there anything in the parent theme functions file that would be preventing me from adding a child theme? Or could it be something else? When I activate the child theme the whole site breaks.

<?php

	$functions_path = TEMPLATEPATH . '/functions/';
	//$includes_path = TEMPLATEPATH . '/includes/';
	$includes_path = get_stylesheet_directory() . '/includes/';

	//Loading jQuery and Scripts
	require_once $includes_path . 'theme-scripts.php';
	//get_template_part('theme-scripts.php');

	//Widget and Sidebar
	require_once $includes_path . 'sidebar-init.php';
	require_once $includes_path . 'register-widgets.php';

	//Theme initialization
	require_once $includes_path . 'theme-init.php';

	//Additional function
	require_once $includes_path . 'theme-function.php';

	//Shortcodes
	require_once $includes_path . 'theme_shortcodes/shortcodes.php';
	//include_once(TEMPLATEPATH . '/includes/theme_shortcodes/alert.php');
	get_template_part('/includes/theme_shortcodes/alert.php');
	include_once(TEMPLATEPATH . '/includes/theme_shortcodes/tabs.php');
	include_once(TEMPLATEPATH . '/includes/theme_shortcodes/toggle.php');
	include_once(TEMPLATEPATH . '/includes/theme_shortcodes/html.php');

	//tinyMCE includes
	include_once(TEMPLATEPATH . '/includes/theme_shortcodes/tinymce/tinymce_shortcodes.php');

	//Loading theme textdomain
	load_theme_textdomain( 'theme1460', TEMPLATEPATH . '/languages' );

	// removes detailed login error information for security
	add_filter('login_errors',create_function('$a', "return null;"));

	if ( !function_exists( 'optionsframework_init' ) ) {

	/*-----------------------------------------------------------------------------------*/
	/* Options Framework Theme
	/*-----------------------------------------------------------------------------------*/

	/* Set the file path based on whether the Options Framework Theme is a parent theme or child theme */

	if ( STYLESHEETPATH == TEMPLATEPATH ) {
		define('OPTIONS_FRAMEWORK_URL', TEMPLATEPATH . '/admin/');
		define('OPTIONS_FRAMEWORK_DIRECTORY', get_bloginfo('template_directory') . '/admin/');
	} else {
		define('OPTIONS_FRAMEWORK_URL', STYLESHEETPATH . '/admin/');
		define('OPTIONS_FRAMEWORK_DIRECTORY', get_bloginfo('stylesheet_directory') . '/admin/');
	}

	require_once (OPTIONS_FRAMEWORK_URL . 'options-framework.php');

	}

	// Removes Trackbacks from the comment cout
	add_filter('get_comments_number', 'comment_count', 0);
	function comment_count( $count ) {
		if ( ! is_admin() ) {
			global $id;
			$comments_by_type = &separate_comments(get_comments('status=approve&post_id=' . $id));
			return count($comments_by_type['comment']);
		} else {
			return $count;
		}
	}

	// Custom excpert length
	function new_excerpt_length($length) {
	return 60;
	}
	add_filter('excerpt_length', 'new_excerpt_length');

	// enable shortcodes in sidebar
	add_filter('widget_text', 'do_shortcode');

	// custom excerpt ellipses for 2.9+
	function custom_excerpt_more($more) {
		return 'Read More &raquo;';
	}
	add_filter('excerpt_more', 'custom_excerpt_more');
	// no more jumping for read more link
	function no_more_jumping($post) {
		return '&nbsp;<a href="'.get_permalink($post->ID).'" class="read-more">'.'Continue Reading'.'</a>';
	}
	add_filter('excerpt_more', 'no_more_jumping');

	// category id in body and post class
	function category_id_class($classes) {
		global $post;
		foreach((get_the_category($post->ID)) as $category)
			$classes [] = 'cat-' . $category->cat_ID . '-id';
			return $classes;
	}

	add_filter('post_class', 'category_id_class');
	add_filter('body_class', 'category_id_class');

?>