RichardRice on "Getting "Warning: explode() expects" after migration"

I'm migrating to a new host. My site is 99% ready to go, save one issue. I'm getting the following error in the middle of a page:

Warning: explode() expects parameter 2 to be string, array given in /home/content/p3nexnas03/06/2064606/html/wp-content/themes/tatsoft/functions.php on line 480

Line 480 reads:

if($break == explode(',',$break))

The whole of it reads:

function sub_content($cat_name, $break = array() ) {
	if( query_posts('posts_per_page=5&orderby=menu_order&order=ASC&post_type=wordblock&wordblock_category='.$cat_name )): // run querys
		if($break == explode(',',$break)) // sets when to create <div class="clear both"></div> :: default is none
			$i = 0; // slide count sets
		?>
		<div class="entry-sub-content">
		<?php
			while(have_posts()) : the_post();
			$i++ ; // slide count adds
			$wb = wdblk(get_the_ID()); // grab content
		?>
			<div class="slide-content">
			    <?
			     $link_title= $wb['title'];
                 $link_title = str_replace('&','and',$link_title);
                 $link_title = str_replace(' ','-',$link_title);
			    ?>
				<h2><a href="/services/<?echo strtolower($link_title)?>"><?php echo $wb['title']; ?></a></h2>
				<?php echo $wb['content']; ?>
			</div>
		<?php if(in_array($i,$break))
				echo '<div class="clear both"></div>';

         endwhile; wp_reset_query(); //resets query and end while case?>

		</div>
		<?php endif;
}

Here's the page:

http://02e.a70.myftpupload.com/services/overview/

I'd appreciate any help here

:-)