Too much recursion
$('Form_CreateForm').validate is not a function

<?php
/**
* Data representing a stockist
*/
class Stockist extends DataObject {

static $db = array(
'Name' => 'Varchar',
'Contact' => 'Varchar',
'Address' => 'Text',
    'City' => 'Varchar',
    'Postcode' => 'Varchar',
    'Phone' => 'Varchar',
    'Fax' => 'Varchar',
    'Mobile' => 'Varchar',
    'Email' => 'Varchar',
    'Website' => 'Varchar',
    'FullStockist' => 'Boolean',
    'Date' => 'Date',
);

static $has_one = array(
'Location' => 'Location'
);

static $searchable_fields = array(
'Name' => array(
'field' => 'TextField',
'filter' => 'PartialMatchFilter',
),
'Contact' => array(
'field' => 'TextField',
'filter' => 'PartialMatchFilter',
),
    'Address' => array(
'field' => 'TextareaField',
'filter' => 'PartialMatchFilter',
),
    'City' => array(
'field' => 'TextField',
'filter' => 'PartialMatchFilter',
),
    'Location.Name' => array(
       'title' => 'Location',
'field' => 'TextField',
'filter' => 'PartialMatchFilter',
),
    'Postcode' => array(
'field' => 'NumericField',
       'filter' => 'ExactMatchFilter',
),
    'FullStockist' => array(
       'title' => 'Is a full stockist?',
'field' => 'CheckboxField',
       'filter' => 'ExactMatchFilter',
),
    'Location.InAustralia' => array(
       'title' => 'Only in Australia?',
'field' => 'CheckboxField',
       'filter' => 'ExactMatchFilter',
)
);

static $summary_fields = array(
'Name',
    'City',
'Location.Name' => 'Location',
    'Phone',
    'FullStockist'
);

function getCMSFields() {
// test
      $fields = new FieldSet();
      $fields->push(new TextField('Name', 'Business Name'));
      return $fields;
}
}

?>

<?php
/**
* Interface for maintaining stockists
*/
class StockistAdmin extends ModelAdmin {

protected static $managed_models = array(
'Stockist',
'Location'
);

static $url_segment = 'stockists';
static $menu_title = 'Stockists';

}

?>

Director::addRules(50, array('admin/stockists/$Class/$Action/$ID' => 'StockistAdmin'));