Problem getting PHP CWP running...

I'm running Appleshare Fileserver 6 on MacOS X.6.7 (MacMini server). I have Filemaker Server Advanced 11 installed. Instant Web Publishing works fine. XSLT web publishing works fine. I have SSL enabled on the server (ie, all my urls are HTTPS _ :443). I have my server set to "List only the databases each user is authorized to access". I have a valid, institutionally signed security certificate for my server. I have used the built-in Appleshare server version of php, it is PHP Version 5.3.2. I have checked my include path, it is set to .:/usr/lib/php, I have, in that directory, both the Filemaker.php file and the directory Filemaker containing

Command Error.php Layout.php RelatedSet.php

Command.php Field.php PEAR.php Result.php

Error Implementation Record.php conf

When I run the PHP Custom Web Publishing Test, I receive the following error:

XML error: SYSTEM or PUBLIC, the URI is missing at line 1)

I'm stumped.....