Maximum function nesting level of ‚200‘ reached, aborting! – Datepicker

Zdravím a prosím o radu:
U odeslani tohoto formu me to hodí:

Maximum function nesting level of '200' reached, aborting!

protected function createComponentEvent() {
		$form = new Form;
		//$form->getElementPrototype()->class('ajax');

		$form->addGroup('Nová rezervace');

		$form->addDatePicker("from", "Od:", 15)
			->setRequired('Zadejte Od !')
			->setDefaultValue($this->getHttpRequest()->getQuery('calendar-for'));

		$form->addSelect('from2', 'Čas od:', $this->getHours());

		$form->addDatePicker('to', 'Do')
			->setRequired('Zadejte Do !')
			->addRule(Form::VALID, 'Zadejte Do !')
			->addCondition(Form::FILLED)
			->addRule(Form::RANGE, 'Entered date is not within allowed range.', array(
				new DateTime('-0 days 00:00'),
				new DateTime('+30 days 00:00')
			));
....

Config:

- Nextras\Forms\DI\FormsExtension

Třida Datepicker pak vypada takto

class DatePicker extends DateTimePickerPrototype
{
	/** @var string */
	protected $htmlFormat = self::W3C_DATE_FORMAT;

	/** @var string */
	protected $htmlType = 'date';


	protected function getDefaultParser()
	{
		return function($value) {
			if (!preg_match('#^(?P<dd>\d{1,2})[. -] *(?P<mm>\d{1,2})([. -] *(?P<yyyy>\d{4})?)?$#', $value, $matches)) {
				return NULL;
			}

			$dd = $matches['dd'];
			$mm = $matches['mm'];
			$yyyy = isset($matches['yyyy']) ? $matches['yyyy'] : date('Y');

			if (!checkdate($mm, $dd, $yyyy)) {
				return NULL;
			}

			$value = new Nette\Utils\DateTime;
			$value->setDate($yyyy, $mm, $dd);
			$value->setTime(0, 0, 0);
			return $value;
		};
	}

}

Pokud zakomentuju validacni pravdila u Datepickeru, je to ok.. Ladenka hodi jen ten nesting.
Co se me tam muze cyklit prosim? Resp se tam ma asi pouzit něco jinak, ale nedari se me na to prijit co..

Moc diky!