Need Help getting Featured Slider ot work

Hi,

I got the Pioneer WordPress theme. And I need help getting the main page featured slider to work. I was able to get the post to show, however, the images for the post dont show. Below is a snippet of the code used in the part used for the slider.

Thanks, you help is greatly appreciated.

The Pioneer theme can seen here.
https://bodegazine.com/free-pioneer-magazine-theme/

<!-- BEGIN featured -->
<div id="featured">
	<!-- begin slider -->
	<div class="slider">
		<?php
		$tmp_query = $wp_query; $count = 0;
		query_posts('showposts=3&cat=' . get_cat_ID(dp_settings('featured')));
		if (have_posts()) :
		while (have_posts()) : the_post(); $count++;
		?>
		<div id="slide<?php echo $count; ?>" class="item">
			<a class="featuredimg" href="<?php the_permalink(); ?>"><?php dp_attachment_image($post->ID, 'full', 'alt="' . $post->post_title . '"'); ?></a>
			<div class="text">
				<h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
				<p><?php echo dp_clean($post->post_content, 180); ?> [...]</p>
			</div>
		</div>
		<?php
		endwhile;
		endif;
		$wp_query = $tmp_query;
		?>
		<ul>
			<?php
			$tmp_query = $wp_query; $count = 0;
			query_posts('showposts=3&cat=' . get_cat_ID(dp_settings('featured')));
			if (have_posts()) :
			while (have_posts()) : the_post(); $count++;
			?>
			<li<?php if ($count==1) echo ' class="active"'; ?> id="thumb<?php echo $count; ?>">
				<a href="#"><?php dp_attachment_image($post->ID, 'thumbnail', 'alt="' . $post->post_title . '"'); ?></a>
				<a href="#" class="title"><?php the_title(); ?></a>
				<p><?php echo dp_clean($post->post_content, 80); ?> [...]</p>
			</li>
			<?php
			endwhile;
			endif;
			$wp_query = $tmp_query;
			?>
		</ul>
		<div class="hover"></div>
	</div>
	<!-- end slider -->
</div>
<!-- END featured -->