private function checkPackageRequirements($package = '')
	{
		if ($package == '')
		{
			return false;
		}

		$installed_exts = get_loaded_extensions();
		if (!in_array($package, $installed_exts))
		{
			$this->setError(\Lang::txt('[ERROR] You are missing the required PHP package %s.', $package));
			return false;
		}

		return true;
	}