It is a strange issue where it isn't finding the file when referenced with an absolute path.
This wouldn't work:
<?php require_once("/webassist/google_javascript/wagmp_map_1.php"); ?>
but this does:
<?php require_once("webassist/google_javascript/wagmp_map_1.php"); ?>
I'm not sure why the absolute path works in other php versions but not this one.