Problems logging to my Dashboard in WordPress

Ok, first of all the line of code you suggested was not there but I added it “define(‘WP_DEBUG’, true);” and this is the error I got….

Notice: Trying to get property of non-object in /Applications/MAMP/htdocs/wordpress/wp-includes/query.php on line 327

Notice: automatic_feed_links is deprecated since version 3.0! Use add_theme_support( 'automatic-feed-links' ) instead. in /Applications/MAMP/htdocs/wordpress/wp-includes/functions.php on line 3237

Notice: ob_flush() [ref.outcontrol]: failed to flush buffer. No buffer to flush. in /Applications/MAMP/htdocs/wordpress/wp-content/plugins/art-direction/art-direction.php on line 23

code in line 327 query.php

function is_feed() {
	global $wp_query;

	return $wp_query->is_feed;
}

code in line 3237 functions.php

if ( WP_DEBUG && apply_filters( 'deprecated_function_trigger_error', true ) ) {
		if ( ! is_null($replacement) )
			trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) );
		else
			trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) );
	}
}

code in line 23 art-direction.php

add_action('shutdown', 'art_scrape_end');
function art_scrape_end() {
	global $global_styles, $single_styles, $output;
	ob_flush();

	$data = "<!-- Art Direction Styles -->\n".$single_styles.$global_styles;

	echo str_replace('</head>', $data."\n</head>", $output);
}

Do you think of any thing that could be wrong or should I replace the 3 folders where these files resides?

Thanks

Thank you for your help, I will give it a try and let you know what happens.

Thanks a lot!