CPT slug crashing my template because it has the word 'for' in it?

I have this piece of code, it’s works great. I use it with CPTs as seen below 'post_type' => mortgage-home-loan. I’m trying to use it on another website which is more or less identical but with a different CPT slug property-for-sale but for some reason the code crashes my page. If I paste in the original mortgage-home-loan slug then it doesn’t crash!

In my notepad++ something weird happens… the for part of property-for-sale is in a different colour (try it yourself). Which makes me think the for part of the slug is causing the crash… is this a WP bug or my fault?

original code… no problem

<?php
			if ( is_single()) {
			$categories = get_the_category();
			if ($categories) {
			foreach ($categories as $category) {
			$cat = $category->cat_ID;
			$args=array(
			'cat' => $cat,
			'order' => asc,
			'post_type' => mortgage-home-loan,
			//'orderby' => rand,
			'post__not_in' => array($post->ID),
			'posts_per_page'=>9999,
			'caller_get_posts'=>1
			);
			$my_query = null;
			$my_query = new WP_Query($args);
			if( $my_query->have_posts() ) {
			// echo '<p>Check out our other '. $category->cat_name . ' products</p>';
			while ($my_query->have_posts()) : $my_query->the_post(); ?>

<?php the_title(); ?>			

			 <?php
			endwhile;
			}}} wp_reset_query(); }
			?>

New code… crashes the page

<?php
			if ( is_single()) {
			$categories = get_the_category();
			if ($categories) {
			foreach ($categories as $category) {
			$cat = $category->cat_ID;
			$args=array(
			'cat' => $cat,
			'order' => asc,
			'post_type' => property-for-sale,
			//'orderby' => rand,
			'post__not_in' => array($post->ID),
			'posts_per_page'=>9999,
			'caller_get_posts'=>1
			);
			$my_query = null;
			$my_query = new WP_Query($args);
			if( $my_query->have_posts() ) {
			// echo '<p>Check out our other '. $category->cat_name . ' products</p>';
			while ($my_query->have_posts()) : $my_query->the_post(); ?>

<?php the_title(); ?>			

			 <?php
			endwhile;
			}}} wp_reset_query(); }
			?>