vb.org Archive - Content Encoding Error when adding template to a template hook

So I've got a popup menu that I have set to appear in postbits. It refers to a bunch of custom profile fields that make up a user's computer specifications. It works fine if I leave it in the postbit template, but I wanted to put it into a plugin instead.

My HTML is saved as a template bit named "postbit_extra_fields_popup," and it's as follows:

HTML Code:

<!-- post specs menu -->

<div class="vbmenu_popup" id="specs_$post[postid]_menu" style="display:none">

        <table cellpadding="4" cellspacing="1" border="0">

        <tr>

                <td class="thead">$post[username]'s PC Specs</td>

        </tr>



        <if condition="$post[field6]">

                <tr><td class="vbmenu_option">Processor: $post[field6]</td></tr>

        </if>



        <if condition="$post[field7]">

                <tr><td class="vbmenu_option">Motherboard: $post[field7]</td></tr>

        </if>



        <if condition="$post[field8]">

                <tr><td class="vbmenu_option">Graphics Card: $post[field8]</td></tr>

        </if>



        <if condition="$post[field9]">

                <tr><td class="vbmenu_option">Memory (RAM): $post[field9]</td></tr>

        </if>



        <if condition="$post[field10]">

                <tr><td class="vbmenu_option">Primary Hard Drive: $post[field10]</td></tr>

        </if>



        <if condition="$post[field11]">

                <tr><td class="vbmenu_option">Secondary Hard Drive: $post[field11]</td></tr>

        </if>



        <if condition="$post[field12]">

                <tr><td class="vbmenu_option">Tertiary Hard Drive: $post[field12]</td></tr>

        </if>



        <if condition="$post[field13]">

                <tr><td class="vbmenu_option">Quaternary Hard Drive: $post[field13]</td></tr>

        </if>



        <if condition="$post[field14]">

                <tr><td class="vbmenu_option">Primary Optical Drive: $post[field14]</td></tr>

        </if>



        <if condition="$post[field15]">

                <tr><td class="vbmenu_option">Secondary Optical Drive: $post[field15]</td></tr>

        </if>



        <if condition="$post[field16]">

                <tr><td class="vbmenu_option">Power Supply: $post[field16]</td></tr>

        </if>



        <if condition="$post[field17]">

                <tr><td class="vbmenu_option">Case: $post[field17]</td></tr>

        </if>



        <if condition="$post[field18]">

                <tr><td class="vbmenu_option">Sound Card: $post[field18]</td></tr>

        </if>



        <if condition="$post[field19]">

                <tr><td class="vbmenu_option">Primary Monitor: $post[field19]</td></tr>

        </if>



        <if condition="$post[field22]">

                <tr><td class="vbmenu_option">Secondary Monitor: $post[field22]</td></tr>

        </if>



        <if condition="$post[field20]">

                <tr><td class="vbmenu_option">Operating System: $post[field20]</td></tr>

        </if>



        </table>

</div>

<!-- / post specs menu -->

My plugin is called at the "postbit_display_complete" hook, and looks like this:

PHP Code:


		
			
eval('$template_hook[postbit_end] .= "' . fetch_template('postbit_extra_fields_popup') . '"');

Loading any page with a postbit results in Firefox throwing an error page at me titled "Content Encoding Error." Why am I getting this error?

X vBulletin 3.8.12 by vBS Debug Information
Page Generation 0.01112 seconds Memory Usage 1,739KB Queries Executed 10 (?)
More Information
Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (1)bbcode_html_printable (2)bbcode_php_printable (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)post_thanks_navbar_search (1)printthread (4)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
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