Description:
------------
Uncommenting the last line will produce an odd error affilliated with __autoload:

Warning: __autoload(simplexml_load_file.class.php) [function.--autoload]: failed to open stream: No such file or directory in C:\Program Files\SpikeSource\oss\httpd\htdocs\blindcore\classes\test.usage.only.php on line 4

Fatal error: __autoload() [function.require]: Failed opening required 'simplexml_load_file.class.php' (include_path='.;C:\dev\php5\pear') in C:\Program Files\SpikeSource\oss\httpd\htdocs\blindcore\classes\test.usage.only.php on line 4

The server is spikesource's stack. If you need more info, please email.

I hope that it helps!

Reproduce code:
---------------
Source class:
  public function sendFullRequest( $sendFullRequestURL = NULL ){
  	// If the message to send to Amazon has been set.
  	if( $sendFullRequestURL ){
  		// Then sent the request to Amazon
  		$fileHolder = file_get_contents( $sendFullRequestURL );

  		// Return the message that has been set to Amazon for checking.
  		return $fileHolder;
  	}else{
  		// Otherwise, note that something unextpected has occurred.
  		return "An error occurred in base class AmazonMessageOut. \$sendFullRequestURL is not set.";
  	}
  }
}

Called Instance:

// Autoload classes
function __autoload( $className ){
   require_once $className . '.class.php';
}

$messageOut = new AmazonOperation();

$messageOut->setCurrentOperation( $messageOut->OperationItemLookup );
$messageOut->setCurrentResponseGroup( $messageOut->ResponseMedium );

$messageIn = new AmazonResponse();

$nowAString = $messageIn->getAmazonXml( $messageOut->itemLookup( "0375826688" ) );

echo $nowAString;

// $messageIn->loadXmlFile( $nowAString );

Expected result:
----------------
No errors and the Amazon XML loads

Actual result:
--------------
As was said, the following errors for PHP-native functions:

Warning: __autoload(simplexml_load_file.class.php) [function.--autoload]: failed to open stream: No such file or directory in C:\Program Files\SpikeSource\oss\httpd\htdocs\blindcore\classes\test.usage.only.php on line 4

Fatal error: __autoload() [function.require]: Failed opening required 'simplexml_load_file.class.php' (include_path='.;C:\dev\php5\pear') in C:\Program Files\SpikeSource\oss\httpd\htdocs\blindcore\classes\test.usage.only.php on line 4