xPDO - newQuery and xPDOCriteria problems

<?php 
include("xpdo/xpdo.class.php");

$xpdo= new xPDO('mysql:host=localhost;dbname=sakila',"root","pass",
					array (
						XPDO::OPT_CACHE_PATH => 'cache/',
						XPDO::OPT_TABLE_PREFIX => '',
						XPDO::OPT_HYDRATE_FIELDS => true,
						XPDO::OPT_HYDRATE_RELATED_OBJECTS => true,
						XPDO::OPT_HYDRATE_ADHOC_FIELDS => true,
						XPDO::OPT_VALIDATE_ON_SAVE => true,
					),
					array (
						PDO::ATTR_ERRMODE => 'PDO_ERRMODE_SILENT',
						PDO::ATTR_PERSISTENT => false,
						PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => true
					)
				); 
?>

<?xml version="1.0" encoding="UTF-8"?>
<model package="MyDBModel" baseClass="xPDOObject" platform="mysql" defaultEngine="MyISAM">
	<object class="Actor" table="actor" extends="xPDOObject">
		<field key="actor_id" dbtype="smallint" precision="5" attributes="unsigned" phptype="integer" null="false" index="pk"  generated="native" />
		<field key="first_name" dbtype="varchar" precision="45" phptype="string" null="false" />
		<field key="last_name" dbtype="varchar" precision="45" phptype="string" null="false" index="index" />
		<field key="last_update" dbtype="timestamp" phptype="timestamp" null="false" default="CURRENT_TIMESTAMP"  extra="on update current_timestamp" />
		<composite alias="FilmActor" class="FilmActor" local="actor_id" foreign="actor_id" cardinality="many" owner="local" />
	</object>
	<object class="Film" table="film" extends="xPDOObject">
		<field key="film_id" dbtype="smallint" precision="5" attributes="unsigned" phptype="integer" null="false" index="pk"  generated="native" />
		<field key="title" dbtype="varchar" precision="255" phptype="string" null="false" index="index" />
		<field key="description" dbtype="text" phptype="string" null="true" />
		<field key="release_year" dbtype="year" precision="4" phptype="string" null="true" />
		<field key="language_id" dbtype="tinyint" precision="3" attributes="unsigned" phptype="integer" null="false" index="index" />
		<field key="original_language_id" dbtype="tinyint" precision="3" attributes="unsigned" phptype="integer" null="true" index="index" />
		<field key="rental_duration" dbtype="tinyint" precision="3" attributes="unsigned" phptype="integer" null="false" default="3" />
		<field key="rental_rate" dbtype="decimal" precision="4,2" phptype="float" null="false" default="4.99" />
		<field key="length" dbtype="smallint" precision="5" attributes="unsigned" phptype="integer" null="true" />
		<field key="replacement_cost" dbtype="decimal" precision="5,2" phptype="float" null="false" default="19.99" />
		<field key="rating" dbtype="enum" precision="'G','PG','PG-13','R','NC-17'" phptype="string" null="true" default="G" />
		<field key="special_features" dbtype="set" precision="'Trailers','Commentaries','Deleted Scenes','Behind the Scenes'" phptype="string" null="true" />
		<field key="last_update" dbtype="timestamp" phptype="timestamp" null="false" default="CURRENT_TIMESTAMP"  extra="on update current_timestamp" />
		<composite alias="FilmActor" class="FilmActor" local="film_id" foreign="film_id" cardinality="many" owner="local" />
	</object>
	<object class="FilmActor" table="film_actor" extends="xPDOObject">
		<field key="actor_id" dbtype="smallint" precision="5" attributes="unsigned" phptype="integer" null="false" index="pk" />
		<field key="film_id" dbtype="smallint" precision="5" attributes="unsigned" phptype="integer" null="false" index="pk" />
		<field key="last_update" dbtype="timestamp" phptype="timestamp" null="false" default="CURRENT_TIMESTAMP"  extra="on update current_timestamp" />
		<aggregate alias="Actor" class="Actor" local="actor_id" foreign="actor_id" cardinality="one" owner="foreign" />
		<aggregate alias="Film" class="Film" local="film_id" foreign="film_id" cardinality="one" owner="foreign" />
	</object>
</model>

<?php 
$actor = $xpdo->getObject('Actor',1);
  
echo "Actor - ".$actor->first_name."  ".$actor->last_name."<br>";

$actors = $actor->getMany('FilmActor'); 
 foreach ($actors as $actor) {  
    echo "Film ".$actor->film_id;
	echo " / ".$actor->getOne('Film')->title."<br>";
 } ?> 

Actor - PENELOPE GUINESS
Film 1 / ACADEMY DINOSAUR
Film 23 / ANACONDA CONFESSIONS
Film 25 / ANGELS LIFE
Film 106 / BULWORTH COMMANDMENTS
......

<?php 
$c = $xpdo->newQuery('FilmActor');  
$c->innerJoin('Film','Film','Film.film_id = FilmActor.film_id');
$c->innerJoin('Actor','Actor','Actor.actor_id = FilmActor.actor_id');
$c->where(array(  
    'FilmActor.actor_id' => 1,
));
$xpdo->setDebug(true);
$items = $xpdo->getCollection('FilmActor',$c);
?>

SELECT `FilmActor`.`actor_id` AS `FilmActor_actor_id`, `FilmActor`.`film_id` AS `FilmActor_film_id`, `FilmActor`.`last_update` AS `FilmActor_last_update` FROM `film_actor` AS `FilmActor` JOIN `film` `Film` ON Film.film_id = FilmActor.film_id JOIN `actor` `Actor` ON Actor.actor_id = FilmActor.actor_id WHERE `FilmActor`.`actor_id` = ? Array

<?php 
$actorTable = $xpdo->getTableName('Actor');  
$query= new xPDOCriteria($xpdo,'  
     SELECT * FROM '.$actorTable.'  
     WHERE `actor_id` < :index  
     LIMIT 10  
',array(  
':index' => 2,
));  
$actors = $xpdo->getCollection('Actor',$query);  
print_r($actors);
?>

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 261900 bytes) in /Applications/XAMPP/xamppfiles/htdocs/xPDOTest/xpdo/om/xpdoobject.class.php  on line 1502

<?php
$items = $xpdo->getCollectionGraph('FilmActor', '{"Film":{},"Actor":{}}', array(
    'FilmActor.actor_id' => 1,
));
?>

<?php
$c = $xpdo->newQuery('FilmActor');
$c->bindGraph('{"Film":{},"Actor":{}}');
$c->where(array(  
    'FilmActor.actor_id' => 1,
));
$xpdo->setDebug(true);
$items = $xpdo->getCollectionGraph('FilmActor', '{"Film":{},"Actor":{}}', $c);
?>

<?php
foreach ($items as $item) {
    echo "Film " . $item->film_id;
    echo " / " . $item->Film->title;
    echo " / " . implode(" ", $item->Actor->get(array('first_name', 'last_name'))) . "<br />";
}
?>

<?php
$query= new $xpdo->newQuery('Actor', array('actor_id:<' => 2));
$query->limit(10);
$actors = $xpdo->getCollection('Actor',$query);
foreach ($actors as $actor) {
    print_r($actor->toArray());
}
?>

<?php
$actorTable = $xpdo->getTableName('Actor');  
$query= new xPDOCriteria($xpdo, "SELECT * FROM {$actorTable} WHERE `actor_id` < :index LIMIT 10", array(
    ':index' => 2,
));
if ($query->prepare() && $query->stmt->execute()) {
    while ($actor = $query->stmt->fetch(PDO::FETCH_ASSOC)) {
        print_r($actor); /* this is just an associative array representing a row from the result set instead of an object */
    }
}
?>

<?php
$c = $xpdo->newQuery('Box');  
$c->innerJoin('BoxOwner','Owner'); // arguments are: className, alias  
$c->innerJoin('User','User','Owner.user = User.id');   
// note the 3rd argument that defines the relationship in the innerJoin  
  
$c->where(array(  
   'Box.width' => 5,  
    'User.user' => 2,  
));  
$c->sortby('Box.name','ASC');  
$c->limit(5,5);  
$boxes = $xpdo->getCollection('Box',$c);
?>

<?php
$query= $xpdo->newQuery('Actor');
$query->where(array('actor_id:<=' => 20));
$query->limit(10);

$actors = $xpdo->getCollection('Actor',$query);
foreach ($actors as $actor) {
   print_r($actor->toArray());
}
?>

<?php
$query= $xpdo->newQuery('Actor');
$query->select('Actor.actor_id, Actor.last_name'); 
$query->where(array('actor_id:<=' => 20));
$query->limit(10);

$actors = $xpdo->getCollection('Actor',$query);
foreach ($actors as $actor) {
   print_r($actor->toArray());
}
?>

SELECT Actor.actor_id, Actor.last_name FROM `actor` AS `Actor` WHERE `Actor`.`actor_id` <= ? LIMIT 10 Array

<?php   
$boxTable = $xpdo->getTableName('Box');  
   $query= new xPDOCriteria($xpdo,'  
        SELECT * FROM '.$boxTable.'  
        WHERE `width` > :width  
        LIMIT 10  
    ',array(  
      ':width' => 4,  
    ));  
   $boxes = $xpdo->getCollection('Box',$query);  
?>