Some Custom Fields Data Not Showing Up

The site: https://www.agapefest.com (sidebar on left, “behind the scenes”)

So I’ve set up, basically, and asides feed in the left sidebar. Pretty standard, uses the_excerpt from a specific category (that cat is hidden in the main loop). And I’ve attempted to include a thumbnail from each post with the_excerpt. Code:

<?php $postlist = get_posts('category=105&numberposts=1');
				foreach ($postlist as $post) :?>
				<?php
                $thumb = get_post_meta($post->ID, "thumb", true);
                if ($thumb != "")
                { ?>
                <a href="<?php the_permalink() ?>" title="<?php the_title(); ?>">
                <img src="<?php $values = get_post_custom_values("thumb"); echo $values[0]; ?>" alt="<?php the_title(); ?>" class="thumb" />
                </a>
                <?php the_excerpt(); ?>
                <?php } else { ?>
                <a href="<?php the_permalink() ?>" title="<?php the_title(); ?>"><?php the_title(); ?></a>
                <?php the_excerpt(); ?>
                <?php } ?>
				<?php endforeach; ?>

The thumbnail doesn’t show up. When you view source on the page you’ll see that the src path doesn’t generate for the thumb.

Any ideas? I copied then modified that snippet from here: https://www.widecastmarketing.com/thumbnail-for-your-wordpress-2.5-posts.html

Any suggestions are greatly appreciated.