Playa strangeness

gistfile1.txt

{exp:channel:entries channel="catentry" disable="member_data|pagination" url_title="{segment_3}"}
{if no_results}{redirect="404"}{/if}
<div id="detail_wrap" class="group">
	{if "{exp:playa:total_parents channel='sumpaper'}" > 0}
	<div class="fbox fb_yellow lo_fi" id="view_summpaper_link">
		{exp:playa:parents limit="1" channel="sumpaper"}<a href="{site_url}summary-papers/{url_title}/">{/exp:playa:parents}View summary paper</a><span class="fb_more_info">This is a link to the summary paper</span>
	</div>
	{/if}
	<h1>{title}</h1>
	
	<div id="cat_detail_col1">
		<table cellpadding="0" cellspacing="0" class="cat_detail_table">
			<tbody>
				<tr>
					<th>Author</th>
					<td>{cf_catentry_author}</td>
				</tr>
				<tr>
					<th>Date</th>
					<td>{cf_catentry_date}</td>
				</tr>
				<tr>
					<th>Publishing details</th>
					<td>{cf_catentry_pub_details}</td>
				</tr>
				{if "{cf_catentry_links:total_rows}" > 0}
				<tr>
					<th>Links</th>
					<td>
						<ul>
							{cf_catentry_links}
							<li><a href="{cf_catentry_links_url}{cf_catentry_links_file}" class="file-pdf">{cf_catentry_links}</a></li>
							{/cf_catentry_links}
						</ul>
					</td>
				</tr>
				{/if}
				<tr>
					<th>Content type</th>
					<td>{cf_catentry_content_type}</td>
				</tr>
				<tr>
					<th>Abstract</th>
					<td>{cf_catentry_abstract}</td>
				</tr>				
			</tbody>
		</table>
	</div>
	
	<div id="cat_detail_col2">
		<div class="fbox fb_blue" id="cat_detail_topics">
			<h3>Topics</h3>
			<ul>
			{exp:gwcode_categories entry_id="{entry_id}" style="linear"}
				<li><a href="{site_url}browse/{cat_url_title}/">{cat_name}</a></li>
			{/exp:gwcode_categories}
			</ul>
		</div>
		{if "{exp:playa:total_children channel='catentry'}" > 0}
		<div class="fbox fb_yellow" id="cat_detail_rels">
			<h3>Related entries</h3>
			<ul>
			{cf_catentry_rel_entries}
				<li><a href="{site_url}browse/entry/{url_title}/">{title}</a></li>
			{/cf_catentry_rel_entries}
			</ul>
		</div>
		{/if}
	</div>
</div>
{/exp:channel:entries}