functions.php using MesoColumn theme fatal error

Hi all. Yes I was messing about with my functions.php and header.php files. I was trying to get ubermenu working with no luck and I have now crashed my site. I am getting this error message:
Fatal error: Call to undefined function add_action() in /home2/ckadesig/public_html/wordpress/wp-includes/functions.php on line 64
I have tried to undo what I have done but no success. I haven’t backed up either file. How can I fix or restore these files?
Here is my functions.php code:

<?php

////////////////////////////////////////////////////////////////////////////////

// Global Define

////////////////////////////////////////////////////////////////////////////////

define('TEMPLATE_DOMAIN', 'mesocolumn'); // do not change this, its for translation and options string

define('SUPER_STYLE', 'no');

////////////////////////////////////////////////////////////////////////////////

// Additional Theme Support

////////////////////////////////////////////////////////////////////////////////

function mesocolumn_init_setup() {

if ( !isset( $content_width ) ) { $content_width = 550; }

////////////////////////////////////////////////////////////////////////////////

// Add Language Support

////////////////////////////////////////////////////////////////////////////////

load_theme_textdomain( TEMPLATE_DOMAIN, get_template_directory() . '/languages' );

add_theme_support( 'post-thumbnails' );

add_theme_support( 'woocommerce' );

add_image_size( 'thumbnail', 300, 300, true);

add_image_size( 'featured-slider-img', 640, 480, true );

set_post_thumbnail_size( 624, 9999 ); // Unlimited height, soft crop

// Add default posts and comments RSS feed links to head

add_theme_support( 'automatic-feed-links' );

add_editor_style();

add_theme_support( 'menus' );

register_nav_menus( array(

'top' => __( 'Top Menu', TEMPLATE_DOMAIN ),

'primary' => __( 'Primary Menu', TEMPLATE_DOMAIN ),

'footer' => __( 'Footer Menu', TEMPLATE_DOMAIN ),

));

$custom_background_support = array(

	'default-color'          => '',

	'default-image'          => '',

	'wp-head-callback'       => '_custom_background_cb',

	'admin-head-callback'    => '',

	'admin-preview-callback' => ''

);

add_theme_support( 'custom-background', $custom_background_support );

// Add support for custom headers.

$custom_header_support = array(

// The default header text color.

		'default-text-color' => 'ffffff',

        'default-image' => '',

        'header-text'  => true,

		// The height and width of our custom header.

		'width' => 1440,

		'height' => '',

		// Support flexible heights.

		'flex-height' => true,

		// Random image rotation by default.

	   'random-default'	=> false,

		// Callback for styling the header.

		'wp-head-callback' => '',

		// Callback for styling the header preview in the admin.

		'admin-head-callback' => '',

		// Callback used to display the header preview in the admin.

		'admin-preview-callback' => '',

);

add_theme_support( 'custom-header', $custom_header_support );

}
add_action( 'after_setup_theme', 'mesocolumn_init_setup' );

// add default callback for wp_pages

function mesocolumn_revert_wp_menu_page($args) {

global $bp, $bp_active;

$pages_args = array('depth' => 0,'echo' => false,'exclude' => '','title_li' => '');

$menu = wp_page_menu( $pages_args );

$menu = str_replace( array( '<div class="menu">
<ul>', '</ul>
</div>' ), array( '<ul class="sf-menu">', '' ), $menu );

echo $menu;

if($bp_active=='true'):

do_action( 'bp_nav_items' );

endif; 

 ?>

<?php }

// add default callback for wp_list_categories

function mesocolumn_revert_wp_menu_cat() {

global $bp;

$menu = wp_list_categories('orderby=name&show_count=0&title_li=');

return $menu;

 ?>

<?php }

// add home link in custom menus

function mesocolumn_dtheme_page_menu_args( $args ) {

$args['show_home'] = true; return $args; }

add_filter( 'wp_page_menu_args', 'mesocolumn_dtheme_page_menu_args' );

///////////////////////////////////////////////////////////////////////////////

// Check if BuddyPress is installed

//////////////////////////////////////////////////////////////////////////////

if ( function_exists( 'bp_is_active' ) ) {

global $blog_id, $current_blog;

if ( is_multisite() ) {

//check if multiblog

if ( defined( 'BP_ENABLE_MULTIBLOG' ) && BP_ENABLE_MULTIBLOG ) {

$bp_active = 'true';

} else if ( defined( 'BP_ROOT_BLOG' ) && BP_ROOT_BLOG == $current_blog->blog_id ) {

$bp_active = 'true';

}

else if ( defined( 'BP_ROOT_BLOG' ) && ( $blog_id != 1 ) ) {

$bp_active = 'false';

}

} else {

$bp_active = 'true';

}

}

else {

$bp_active = 'false';

}

///////////////////////////////////////////////////////////////////////////////

// Check if BBPress installed and if in bbpress forum page

//////////////////////////////////////////////////////////////////////////////

if ( class_exists( 'bbPress' ) ) :

function mesocolumn_check_bpress_init() {

global $in_bbpress;

$forum_root_slug = get_option('_bbp_forum_slug');

$topic_root_slug = get_option('_bbp_topic_slug');

$reply_root_slug = get_option('_bbp_reply_slug');

if( get_post_type() == 'forum' || is_page('forums') || is_page('support') || get_post_type() == $forum_root_slug ||

get_post_type() == $topic_root_slug || get_post_type() == $reply_root_slug ) {

$in_bbpress = 'true';

}

//echo $in_bbpress;

}

add_action('wp_head','mesocolumn_check_bpress_init');

endif;

function mesocolumn_theme_custom_style_init() {

global $theme_version,$is_IE,$bp_active;

if($is_IE): ?>

<style type="text/css">

#main-navigation,.post-meta,a.button,input[type='button'], input[type='submit'],h1.post-title,.wp-pagenavi a,#sidebar .item-options,.iegradient,h3.widget-title,.footer-bottom,.sf-menu .current_page_item a, .sf-menu .current_menu_item a, .sf-menu .current-menu-item a,.sf-menu .current_page_item a:hover, .sf-menu .current_menu_item a:hover, .sf-menu .current-menu-item a:hover {filter: none !important;} #buddypress .activity-list .activity-avatar {float: none !important;}

</style>

<?php endif; ?>

<?php print "<style type='text/css' media='all'>"; ?>

@font-face {

font-family: 'FontAwesome';

src: url('<?php echo get_template_directory_uri(); ?>/lib/scripts/fontawesome/font/fontawesome-webfont.eot');

src: url('<?php echo get_template_directory_uri(); ?>/lib/scripts/fontawesome/font/fontawesome-webfont.eot?#iefix') format('eot'), url('<?php echo get_template_directory_uri(); ?>/lib/scripts/fontawesome/font/fontawesome-webfont.woff') format('woff'), url('<?php echo get_template_directory_uri(); ?>/lib/scripts/fontawesome/font/fontawesome-webfont.ttf') format('truetype'), url('<?php echo get_template_directory_uri(); ?>/lib/scripts/fontawesome/font/FontAwesome.otf') format('opentype'), url('<?php echo get_template_directory_uri(); ?>/lib/scripts/fontawesome/font/fontawesome-webfont.svg#FontAwesome') format('svg');

font-weight: normal;

font-style: normal;

}

<?php get_template_part ( '/lib/options/options-css' ); ?>

<?php

$header_textcolor = get_theme_mod('header_textcolor');

if( get_header_image() && $header_textcolor != '' ): ?>

#custom #header-overlay a {color: #<?php echo $header_textcolor; ?> !important;text-decoration: none;}

#custom #siteinfo p#site-description {color: #<?php echo $header_textcolor; ?> !important;text-decoration: none;}

<?php endif; ?>

<?php

$header_overlay = get_theme_mod('custom_header_overlay');

if( get_header_image() && $header_overlay == 'Yes' ): ?>

#header-overlay { float:left;width:100%;padding:0%;background: transparent url('<?php echo get_header_image(); ?>') no-repeat center center; background-size: auto <?php echo get_custom_header()->height; ?>px; height:<?php echo get_custom_header()->height; ?>px; }

@media only screen and (min-width:300px) and (max-width:770px){

#header-overlay { background-size: 100% auto; height:auto; }

}

<?php endif; ?>

<?php $breadcrumb_on = get_theme_option('breadcrumbs_on');

if($breadcrumb_on != 'Enable'): ?>

.content, #right-sidebar { padding-top: 3em !important; }

<?php endif; ?>

<?php if( get_theme_option('custom_css', 'css') ): ?>

<?php echo get_theme_option('custom_css', 'css'); ?>

<?php endif; ?>

<?php print "</style>"; ?>

<?php }

add_action('wp_head','mesocolumn_theme_custom_style_init');

///////////////////////////////////////////////////////////////////////////////

// Load Theme Styles and Javascripts

///////////////////////////////////////////////////////////////////////////////

/*---------------------------load google webfont style--------------------------------------*/

function mesocolumn_theme_load_gwf_styles() {

if( get_theme_option('body_font') == 'Choose a font' || get_theme_option('body_font') == '') {

wp_register_style('default_gwf', 'http://fonts.googleapis.com/css?family=Open+Sans:400,400italic,600,600italic,700,700italic,300,300italic');

wp_enqueue_style( 'default_gwf');

}

}

add_action('wp_enqueue_scripts', 'mesocolumn_theme_load_gwf_styles');

/*---------------------------load styles--------------------------------------*/

function mesocolumn_theme_load_styles() {

global $theme_version,$is_IE,$bp_active;

if ( class_exists('woocommerce') && get_theme_option('custom_shop') == 'Enable' ) {

if( file_exists( get_template_directory() . '/lib/woocommerce/woocommerce-theme-css.css' ) ):

wp_enqueue_style( 'custom-woo-css', get_template_directory_uri() . '/lib/woocommerce/woocommerce-theme-css.css', array(), $theme_version );

endif;

}

if ( class_exists('jigoshop') && get_theme_option('custom_shop') == 'Enable' ) {

if( file_exists( get_template_directory() . '/lib/jigoshop/jigoshop-theme-css.css' ) ):

wp_enqueue_style( 'custom-jigoshop-css', get_template_directory_uri() . '/lib/jigoshop/jigoshop-theme-css.css', array(), $theme_version );

endif;

}

if($bp_active=='true'):

/* activate buddypress css */

if( file_exists( get_template_directory() . '/lib/buddypress/bp-css.css' ) ):

wp_enqueue_style( 'bp-css', get_template_directory_uri() . '/lib/buddypress/bp-css.css', array(), $theme_version );

endif;

endif;

wp_enqueue_style( 'superfish', get_template_directory_uri(). '/lib/scripts/superfish-menu/css/superfish.css', array(), $theme_version );

wp_enqueue_style( 'tabber', get_template_directory_uri() . '/lib/scripts/tabber/tabber.css', array(), $theme_version );

if ( ( is_home() || is_front_page() || is_page_template('page-templates/template-blog.php') ) && get_theme_option('slider_on') == 'Enable'  ) {

wp_enqueue_style( 'jd-gallery-css', get_template_directory_uri(). '/lib/scripts/jd-gallery/jd.gallery.css', array(), $theme_version );

}

/*load font awesome */

wp_enqueue_style( 'font-awesome', get_template_directory_uri() . '/lib/scripts/fontawesome/css/font-awesome.css', array(), $theme_version );

if($is_IE):

wp_enqueue_style( 'font-awesome-ie7', get_template_directory_uri() . '/lib/scripts/fontawesome/css/font-awesome-ie7.css', array(), $theme_version );

endif;

/* load custom style */

if( file_exists( get_template_directory() . '/custom.css' ) ):

wp_enqueue_style( 'custom-css', get_template_directory_uri() . '/custom.css', array(), $theme_version );

endif;

?>

<?php

}

add_action( 'wp_enqueue_scripts', 'mesocolumn_theme_load_styles' );

/*---------------------------load js scripts--------------------------------------*/

function mesocolumn_theme_load_scripts() {

global $theme_version, $is_IE;

wp_enqueue_script("jquery");

wp_enqueue_script('hoverIntent');

wp_enqueue_script('modernizr', get_template_directory_uri() . '/lib/scripts/modernizr/modernizr.js', false, $theme_version, true );

if($is_IE):

wp_enqueue_script('html5shim', '//html5shiv.googlecode.com/svn/trunk/html5.js', false,$theme_version, false );

endif;

wp_enqueue_script( 'tabber', get_template_directory_uri() . '/lib/scripts/tabber/tabber.js', false, $theme_version, true );

wp_enqueue_script('superfish-js', get_template_directory_uri() . '/lib/scripts/superfish-menu/js/superfish.js', false, $theme_version, true );

wp_enqueue_script('supersub-js', get_template_directory_uri() . '/lib/scripts/superfish-menu/js/supersubs.js', false, $theme_version, true );

if ( ( is_home() || is_front_page() || is_page_template('page-templates/template-blog.php') ) && get_theme_option('slider_on') == 'Enable' ) {

wp_enqueue_script('mootools-js', get_template_directory_uri(). '/lib/scripts/jd-gallery/mootools.v1.11.js', false, $theme_version, true );

wp_enqueue_script('jd-gallery2-js', get_template_directory_uri(). '/lib/scripts/jd-gallery/jd.gallery.v2.js', false, $theme_version, true );

wp_enqueue_script('jd-gallery-set-js', get_template_directory_uri(). '/lib/scripts/jd-gallery/jd.gallery.set.js', false, $theme_version, true );

wp_enqueue_script('jd-gallery-transitions-js', get_template_directory_uri(). '/lib/scripts/jd-gallery/jd.gallery.transitions.js', false, $theme_version, true );

}

wp_enqueue_script('custom-js', get_template_directory_uri() . '/lib/scripts/custom.js', false,$theme_version, true );

if ( is_singular() && get_option( 'thread_comments' ) && comments_open() ) wp_enqueue_script( 'comment-reply' ); ?>

<?php }

add_action( 'wp_enqueue_scripts', 'mesocolumn_theme_load_scripts' );

/* prior to mesocolumn theme custom.css */

function check_if_custom_css_exists() {

if( file_exists( get_template_directory() . '/custom.css') || file_exists( get_stylesheet_directory() . '/custom.css') ):

printf( __('<div class="error"><p>Custom.css found in your theme, please copy paste your <a href="%1$s">custom.css</a> content into wp-admin->appeareance->custom css and then delete/moved the custom.css file.</p></div>', TEMPLATE_DOMAIN), admin_url('/theme-editor.php?file=custom.css&theme=mesocolumn') );

endif;

}

add_action('admin_notices', 'check_if_custom_css_exists', 10);

function check_if_option_db_updated() {

$check_themecleanup = get_option('tn_mesocolumn_body_font');

if( $check_themecleanup ) {

printf( __('<div class="error"><p>Theme Options database need to update! resave your theme options, category color, page color and custom css options one by one</p></div>', TEMPLATE_DOMAIN) );

}

}

add_action('admin_notices', 'check_if_option_db_updated', 10);

////////////////////////////////////////////////////////////////////////////////

// Add Theme Functions for parent and child theme compability

////////////////////////////////////////////////////////////////////////////////

/* check parent and child theme for theme-functions.php */

if( is_child_theme() && 'mesocolumn' == get_template() && file_exists( get_stylesheet_directory() . '/lib/functions/theme-functions.php' ) ):

include( get_stylesheet_directory() . '/lib/functions/theme-functions.php' );

else:

include( get_template_directory() . '/lib/functions/theme-functions.php' );

endif;

/* check parent and child theme for option-functions.php */

if( is_child_theme() && 'mesocolumn' == get_template() && file_exists( get_stylesheet_directory() . '/lib/functions/option-functions.php' ) ):

include( get_stylesheet_directory() . '/lib/functions/option-functions.php' );

else:

include( get_template_directory() . '/lib/functions/option-functions.php' );

endif;

/* check parent and child theme for option-functions.php */

if( is_child_theme() && 'mesocolumn' == get_template() && file_exists( get_stylesheet_directory() . '/lib/functions/custom-header-functions.php' ) ):

include( get_stylesheet_directory() . '/lib/functions/custom-header-functions.php' );

else:

include( get_template_directory() . '/lib/functions/custom-header-functions.php' );

endif;

/* check parent and child theme for widget-functions.php */

if( is_child_theme() && 'mesocolumn' == get_template() && file_exists( get_stylesheet_directory() . '/lib/functions/widget-functions.php' ) ):

include( get_stylesheet_directory() . '/lib/functions/widget-functions.php' );

else:

include( get_template_directory() . '/lib/functions/widget-functions.php' );

endif;

/* check parent and child theme for custom-functions.php */

if( is_child_theme() && 'mesocolumn' == get_template() && file_exists( get_stylesheet_directory() . '/lib/functions/custom-functions.php' ) ):

include( get_stylesheet_directory() . '/lib/functions/custom-functions.php' );

else:

if( file_exists( get_template_directory() . '/lib/functions/custom-functions.php' ) ):

include( get_template_directory() . '/lib/functions/custom-functions.php' );

endif;

endif;

/* check parent and child theme for hook-functions.php */

if( is_child_theme() && 'mesocolumn' == get_template() && file_exists( get_stylesheet_directory() . '/lib/functions/hook-functions.php' ) ):

include( get_stylesheet_directory() . '/lib/functions/hook-functions.php' );

else:

if( file_exists( get_template_directory() . '/lib/functions/hook-functions.php' ) ):

include( get_template_directory() . '/lib/functions/hook-functions.php' );

endif;

endif;

/* check parent and child theme for bp-custom-functions.php */

if($bp_active=='true'):

if( is_child_theme() && 'mesocolumn' == get_template() && file_exists( get_stylesheet_directory() . '/lib/buddypress/bp-custom-functions.php' ) ):

include( get_stylesheet_directory() . '/lib/buddypress/bp-custom-functions.php' );

else:

if( file_exists( get_template_directory() . '/lib/buddypress/bp-custom-functions.php' ) ):

include( get_template_directory() . '/lib/buddypress/bp-custom-functions.php' );

endif;

endif;

endif;

/* check parent and child theme for bp-widgets-functions.php */

if($bp_active=='true'):

if( is_child_theme() && 'mesocolumn' == get_template() && file_exists( get_stylesheet_directory() . '/lib/buddypress/bp-widgets-functions.php' ) ):

include( get_stylesheet_directory() . '/lib/buddypress/bp-widgets-functions.php' );

else:

if( file_exists( get_template_directory() . '/lib/buddypress/bp-widgets-functions.php' ) ):

include( get_template_directory() . '/lib/buddypress/bp-widgets-functions.php' );

endif;

endif;

endif;

/* check parent and child theme for bbpress-theme-functions.php */

if ( class_exists('bbPress') ):

if( is_child_theme() && 'mesocolumn' == get_template() && file_exists( get_stylesheet_directory() . '/lib/bbpress/bbpress-theme-functions.php' ) ):

include( get_stylesheet_directory() . '/lib/bbpress/bbpress-theme-functions.php' );

else:

if( file_exists( get_template_directory() . '/lib/bbpress/bbpress-theme-functions.php' ) ):

include( get_template_directory() . '/lib/bbpress/bbpress-theme-functions.php' );

endif;

endif;

endif;

/* check parent and child theme for woocommerce-theme-functions.php */

if ( class_exists('woocommerce') ) :

if( is_child_theme() && 'mesocolumn' == get_template() && file_exists( get_stylesheet_directory() . '/lib/woocommerce/woocommerce-theme-functions.php' ) ):

include( get_stylesheet_directory() . '/lib/woocommerce/woocommerce-theme-functions.php' );

else:

if ( file_exists( get_template_directory() . '/lib/woocommerce/woocommerce-theme-functions.php' ) ):

include( get_template_directory() . '/lib/woocommerce/woocommerce-theme-functions.php' );

endif;

endif;

endif;

/* check parent and child theme for jigoshop-theme-functions.php */

if ( class_exists('jigoshop') ) :

if( is_child_theme() && 'mesocolumn' == get_template() && file_exists( get_stylesheet_directory() . '/lib/jigoshop/jigoshop-theme-functions.php' ) ):

include( get_stylesheet_directory() . '/lib/jigoshop/jigoshop-theme-functions.php' );

else:

if ( file_exists( get_template_directory() . '/lib/jigoshop/jigoshop-theme-functions.php' ) ):

include( get_template_directory() . '/lib/jigoshop/jigoshop-theme-functions.php' );

endif;

endif;

endif;

?>

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