Date/time error message on checkout

		JPluginHelper::importPlugin('hikashop');
		$dispatcher = JDispatcher::getInstance();
		$dispatcher->trigger('onFieldDateDisplay', array($field->field_namekey, $field, &$value, &$map, &$format, &$size));

		if(HIKASHOP_J25 && !empty($value) && $field->field_options['format'] != "%Y-%m-%d") {
			$seps = preg_replace('#[a-z0-9%]#iU','',$field->field_options['format']);
			$seps = str_replace(array('.','-'),array('\.','\-'),$seps);
			$mConv = false; $yP = -1; $mP = -1; $dP = -1; $i = 0;
			foreach(preg_split('#['.$seps.']#', $field->field_options['format']) as $d) {
				switch($d) {
					case '%y':
					case '%Y':
						if($yP<0) $yP = $i;
						break;
					case '%b':
					case '%B':
						$mConv = true;
					case '%m':
						if($mP<0) $mP = $i;
						break;
					case '%d':
					case '%e':
						if($dP<0) $dP = $i;
						break;
				}
				$i++;
			}
			$elems = preg_split('#['.$seps.']#', $value);
			$value = @$elems[$yP] . '-' . @$elems[$mP] . '-' . @$elems[$dP];
			$app = Jfactory::getApplication();
			if($app->isAdmin()) {
				$app->enqueueMessage('Since Joomla 2.5.24 it is not possible anymore to change the format of dates. If you need a different format, please use the advanced datepicker type of custom field.');
			}
			$format = "%Y-%m-%d";
			$field->field_options['format'] = $format;
		}
		if(HIKASHOP_J25 && !empty($value)) {
			try{
				JHTML::_('date', $value, null, null);
			}catch(Exception $e) {
				$value = '';
			}
		}

		JPluginHelper::importPlugin('hikashop');
		$dispatcher = JDispatcher::getInstance();
		$dispatcher->trigger('onFieldDateDisplay', array($field->field_namekey, $field, &$value, &$map, &$format, &$size));