Can't change events description to textile editor

I'm trying to change the descriptiopn field in events to textile. I've taken the default events.html template and changed to below but it isn't using textile. Is there something obvious wrong?

<div class="vevent">
    <h2 class="summary"><perch:events id="eventTitle" /></h2>

    <p class="dtstart"><span class="value-title" title="<perch:events id="eventDateTime" format="c" />"><perch:events id="eventDateTime" format="%c" /></span></p>

    <div class="description"><perch:events id="eventDescHTML" type="textarea" textile="true" editor="markitup" size="m" encode="false" /></div>

    <p class="category"><perch:events id="category_names" encode="false" /></p>

    <perch:if exists="image">
        <img src="<perch:events id="image" type="image" label="Image" width="640" crop="true" />" alt="<perch:events id="eventTitle" />" />
    </perch:if>
</div>

Health check

Setup folder is present and should be deleted
PHP 5.6.31 is up to date
MySQL 5.7.19 is up to date
Image processing available
File upload size is low. You can only upload files up to 2M.

Summary information

Perch: 3.0.11, PHP: 5.6.31, MySQL: mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $, with PDO
Server OS: WINNT, apache2handler
Installed apps: content (3.0.11), assets (3.0.11), categories (3.0.11), perch_blog (5.6.1), perch_events (1.9.5), perch_gallery (2.8.9)
App runtimes: <?php $apps_list = [ 'perch_blog', 'perch_events', 'perch_gallery', ]; ?>
PERCH_LOGINPATH: /mdev64/hwa/hwa-live/perch
PERCH_PATH: C:\wamp64\www\mdev64\hwa\hwa-live\perch
PERCH_CORE: C:\wamp64\www\mdev64\hwa\hwa-live\perch\core
PERCH_RESFILEPATH: C:\wamp64\www\mdev64\hwa\hwa-live\perch\resources
Image manipulation: GD
PHP limits: Max upload 2M, Max POST 8M, Memory: 128M, Total max file upload: 2M
F1: 3b606135b33e6a102526838f4152a807
Resource folder writeable: Yes
HTTP_HOST: localhost:8080
DOCUMENT_ROOT: C:/wamp64/www
REQUEST_URI: /mdev64/hwa/hwa-live/perch/core/settings/diagnostics/
SCRIPT_NAME: /mdev64/hwa/hwa-live/perch/core/settings/diagnostics/index.php

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