Wrong path and subfolder path when creating sub-subpages

Hi,

I'm having a problem when adding sub-subpages. When I add a subpage (i.e. 'Category 1') to my 'Articles' page everything works as expected and the resulting path becomes: '/articles/category-1/index.php'. I tell it that it will have more pages below it and the resulting subfolder path becomes: '/articles/\category-1' which again seems all fine as it should.

Page structure

• Articles
  • Category 1
    • Article testing
  • Category 2
• Another page

Problem occurs when I try to add a sub-subpage (i.e. 'Article testing') and do the same actions, but the resulting paths are this instead:

Path

/articles/category-1/C:/inetpub/wwwroot/pure-cns/articles/category-1/article-testing/index.php

Subpage folder

/articles/\category-1/C:\inetpub\wwwroot\pure-cns\articles\category-1\article-testing

I'm also greeted by a Subpage folder does not exist error.

What am I doing wrong?

Perch is up to date
PHP 5.3.28 is very out of date. More info
MySQL 5.5.22 is up to date
Image processing available

SUMMARY INFORMATION

Perch: 2.8.7, PHP: 5.3.28, MySQL: mysqlnd 5.0.8-dev - 20102224 - $Id: 731e5b87ba42146a687c29995d2dfd8b4e40b325 $, with PDO
Server OS: WINNT, cgi-fcgi
Installed apps: content (2.8.7), assets (2.8.7), categories (2.8.7)
App runtimes: <?php $apps_list = array( 'content', 'categories', );
PERCH_LOGINPATH: /perch
PERCH_PATH: C:\inetpub\wwwroot\pure-cns\perch
PERCH_CORE: C:\inetpub\wwwroot\pure-cns\perch\core
PERCH_RESFILEPATH: C:\inetpub\wwwroot\pure-cns\perch\resources
Image manipulation: GD
PHP limits: Max upload 300M, Max POST 320M, Memory: 256M, Total max file upload: 256M
Resource folder writeable: Yes
HTTP_HOST: www.purecns.co.uk
DOCUMENT_ROOT: C:\inetpub\wwwroot\pure-cns
REQUEST_URI: /perch/core/settings/diagnostics/
SCRIPT_NAME: /perch/core/settings/diagnostics/index.php