WP Code Working w/PHP 5.2, Not 5.4

Hi All,

My hosting provider is updating from PHP 5.2 to 5.4 and when they do this, the thumbnail images for posts stop displaying. I have the following code below:

<h2 class="front" style="margin:0;">More News</h2>

<?php $features = new WP_query(); $features->query('showposts='.$mytheme['featuredn'].'&offset=3'); ?>
<ul id="features">
	<?php while ($features->have_posts()) : $features->the_post(); ?>
	<li>
		<div class="mfpost">
			<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><?php show_thumb($width=$mytheme['featuredthumbW'],$height=$mytheme['featuredthumbH'],$crop='T',$quality=95,$blank=false); ?></a>
			<h2><a href="<?php the_permalink(); ?>" rel="bookmark" title="<?php the_title(); ?>"><?php the_title(); ?></a></h2>
			<p><span class="dates_more_news"><?php the_time('l, F jS, Y') ?></span></p>
			<p class="light_copy"><?php the_excerpt_reloaded($mytheme['featuredexcerptB'], '<a>', 'none', FALSE); ?></p>
		</div>
		<div class="clear"></div>
	</li>
<?php endwhile; ?>
</ul>

I’m not sure what is causing this and haven’t been able to fix it.

Any help would be greatly appreciated.

Thank you.