perch_pages_navigation(); not working as expected with 'From Path'

Hi guys,

I'm having a little difficulty getting a section navigation menu set up with Perch.

I've got a page (titled "Our Treatments", with the path of "/our-treatments/"), that has multiple subpages.

I'm trying to only display the subpages, using this code:

<?php 
perch_pages_navigation([
'template'=>'our-treatments-nav.html',
'include-hidden'=>true,
'from-path'=>'*'
]);
?>

however, this returns nothing at all. Removing the 'from-path' section shows ALL pages on the site (including the subpages).

Perch debug on the page shows this:

Debug Message - Perch 3.0.8
[1] SELECT * FROM perch3_pages WHERE pagePath='/our-treatments/index.php' LIMIT 1
Using template: /templates/pages/attributes/seo.html
[5] SELECT * FROM perch3_pages WHERE pageNew=0 AND pageHidden=0 ORDER BY pageTreePosition ASC
[1] SELECT pageTreePosition FROM perch3_pages WHERE pagePath='/our-treatments/index.php' LIMIT 1
[1] SELECT pageID FROM perch3_pages WHERE pageTreePosition IN ('000-007', '000') ORDER BY pageTreePosition DESC
[5] Using template: /templates/navigation/header_nav.html
[2] SELECT regionKey, regionHTML FROM perch3_content_regions WHERE regionPage='/our-treatments/index.php' OR regionPage='*' ORDER BY regionPage DESC
[1] SELECT regionID, regionTemplate, regionPage, regionRev AS rev FROM perch3_content_regions WHERE regionKey='Title' AND (regionPage='/our-treatments/index.php' OR regionPage='*')
[1] SELECT * FROM ( SELECT idx.itemID, c.regionID, idx.pageID, c.itemJSON, idx2.indexValue as sortval FROM perch3_content_index idx JOIN perch3_content_items c ON idx.itemID=c.itemID AND idx.itemRev=c.itemRev AND idx.regionID=c.regionID JOIN perch3_content_index idx2 ON idx.itemID=idx2.itemID AND idx.itemRev=idx2.itemRev AND idx2.indexKey='_order' WHERE ((idx.regionID=19 AND idx.itemRev=1)) AND idx.itemID=idx2.itemID AND idx.itemRev=idx2.itemRev ) as tbl GROUP BY itemID, pageID, itemJSON, sortval, regionID ORDER BY sortval ASC
[1] Using template: /templates/content//our-treatments/_title.html
[1] SELECT pageID, pageParentID, pageDepth, pageTreePosition FROM perch3_pages WHERE pagePath='/our-treatments/index.php' OR pageSortPath='/our-treatments/index.php' LIMIT 1
[1] SELECT * FROM perch3_pages WHERE pageNew=0 AND pageTreePosition LIKE '000-007%' ORDER BY pageTreePosition ASC
[1] SELECT pageTreePosition FROM perch3_pages WHERE pagePath='/our-treatments/index.php' LIMIT 1
[1] SELECT pageID FROM perch3_pages WHERE pageTreePosition IN ('000-007', '000') ORDER BY pageTreePosition DESC

Here's my Summary Diagnostics:

Perch: 3.0.8, PHP: 5.4.13, MySQL: 5.5.30, with PDO
Server OS: Linux, cgi-fcgi
Installed apps: content (3.0.8), assets (3.0.8), categories (3.0.8)
App runtimes: <?php $apps_list = [ ];
PERCH_LOGINPATH: /cms
PERCH_PATH: /var/www/vhosts/thirdfloordigital.net/cotswoldchiropractic.thirdfloordigital.net/cms
PERCH_CORE: /var/www/vhosts/thirdfloordigital.net/cotswoldchiropractic.thirdfloordigital.net/cms/core
PERCH_RESFILEPATH: /var/www/vhosts/thirdfloordigital.net/cotswoldchiropractic.thirdfloordigital.net/cms/resources
Image manipulation: GD Imagick
PHP limits: Max upload 128M, Max POST 8M, Memory: 128M, Total max file upload: 8M
F1: 0c66c2e1f82f9e0b7617b2cb8270f2c7
Resource folder writeable: Yes
SCRIPT_NAME: /cms/core/settings/diagnostics/index.php
REQUEST_URI: /cms/core/settings/diagnostics/
DOCUMENT_ROOT: /var/www/vhosts/thirdfloordigital.net/cotswoldchiropractic.thirdfloordigital.net
HTTP_HOST: cotswoldchiropractic.thirdfloordigital.net

Any ideas?