Unknown: is_a(): Deprecated

I am trying to get a wordpress posts from specific category to show up outside of the install of wordpress by using:

<?php $recent = new WP_Query("cat=1&showposts=1"); while($recent->have_posts()) : $recent->the_post();?>
				<h2><?php the_title(); ?></h2>
				<p><?php the_excerpt(); ?></p>
				<p><a href="<?php the_permalink(); ?>">Read more...</a></p>
				<?php endwhile; ?>

The post shows up, and so does this message:

Unknown: is_a(): Deprecated. Please use the instanceof operator in /home3/neosaxco/public_html/blog/wp-includes/class-wp-error.php on line 207