The parser crashes when invoking die() or exit function inside included module function. Ex.:

in module main.php
...
require_once( "Module.inc.php" );
...
$object->some_function( $parameter );
...

in module Module.inc.php
...
class SomeObject
{

  function some_function( $parameter )
  {
    ...
    exit; // or die();
  }

}
...