issue-with-a-custom_post_type

<?php
/*
  Template Name: Portfolio 2 columns
 */

get_header()
?>


<div class="container contentwrapper">

    <div class="sixteen columns alpha omega portpage">

		<header><h1 class="headofpage"><?php the_title() ?></h1></header>

        <?php
		echo showPortCategory(get_the_ID());

        $args = array(
            'post_type' => 'port',
            'paged' => $paged,
            'posts_per_page' => get_theme_option("portfolio_work_count"),
        );

		if (isset($_GET['slug'])) {
            $args['tax_query'] = array(
                array(
                    'taxonomy' => 'portcat',
                    'field' => 'slug',
                    'terms' => $_GET['slug']
                )
            );
        }

		$custom_query = new wp_query($args);

		$tempi = 1;

        echo "<div class='portrowed perline2'>";

			while ( $custom_query->have_posts() ) : $custom_query->the_post();
				#We have:
				#get_permalink() - Full url to post;
				#get_the_title() - Post title;
				#get_the_content() - Post text;
				#get_post_time('U', true) - unix timestamp

				$featured_image = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), 'single-post-thumbnail');


				$taxonomies = get_taxonomies();
				$term_list = get_the_terms($key, $taxonomies);

				$pf = get_post_format();
				if (empty($pf))
					$pf = "default";

				$new_term_list = get_the_terms($post->ID, "portcat");

				if (is_array($new_term_list)) {
					foreach ($new_term_list as $term) {
						$tempname = strtr($term->name, array(
							' ' => '-',
								));
						$echoallterm .= strtolower($tempname) . " ";
						$echoterm = $term->name;
					}
				}
				?>

				<div id="post-<?php the_ID() ?>" class="post block_shadow columns eight port2perline all <?php echo $echoallterm; ?>">
					<div class="thispost porttype preloader_container">
						<div class="post-type-cont">

							<a href="<?php the_permalink() ?>" title="<?php the_title() ?>" rel="bookmark"><span class="type_<?php echo $pf; ?>"></span></a>
						</div>
						<div class="post-title-cont">
							<h2 class="post-title">
							   <a href="<?php the_permalink() ?>" title="<?php the_title() ?>" rel="bookmark"><?php the_title() ?></a>
							</h2>
							<?php
							$content = get_the_content();

							if (preg_match_all('#<h1>(.*)</h1>#i', $content, $matches)) {
								foreach ($matches[1] as $key => $val) {
									$$val = $matches[2][$key];
								}
							}
							?>
							<h3><?php echo $val ?></h3>
						</div>
						<div class="post-content">
							<?php if (strlen($featured_image[0]) > 0) { ?><img alt='<?php echo get_the_title(); ?>' src='<?php echo TIMTHUMBURL; ?>?w=420&amp;h=230&amp;src=<?php echo $featured_image[0]; ?>'><?php } ?>
							<?php
							if (strlen($post->post_excerpt) > 0) {
								echo get_the_excerpt();
							}
							?>
						</div>
						<a class="plus_btn" href="<?php the_permalink() ?>">click me</a>
					</div>
					<div class="clear"></div>
				</div><!-- .post -->

			<?php
			unset($echoallterm);

			endwhile;
			wp_reset_query();
			?>
		</div><!-- // rowed -->

		<?php get_pagination() ?>
		<div class="clear"></div>
	</div>
</div>
<div class="clear"></div>

<?php get_footer() ?>