zend session exception on zend_session::start with forms
- by Grant Collins
Hi 
I'm having issues with trying to use Zend_Form_SubForm and sessions.  My controller is in essance acting a wizard showing different subforms depending on the stage of the wizard.  Using the example I am planning on storing the forms in a session namespace.
My controller looks like this.
include 'mylib/Form/addTaskWizardForm.php';
class AddtaskController extends Zend_Controller_Action{
private $config = null;
private $log = null;
private $subFormSession = null;
/**
 * This function is called and initialises the global variables to this object
 * which is the configuration details and the logger to write to the log file.
 */
public function init(){
    $this->config = Zend_Registry::getInstance()->get('config');
    $this->log = Zend_Registry::getInstance()->get('log');
    //set layout
    $this->_helper->layout->setLayout('no-sidemenus');
    //we need to get the subforms and
    $wizardForms = new addTaskWizardForm();        
    $this->subFormSession = new Zend_Session_Namespace('addTaskWizardForms');
    if(!isset($this->subFormSession->subforms)){
        $this->subFormSession->subforms = $wizardForms;
    }
}
/**
 * The Landing page controller for the site.
 */
public function indexAction(){
    $form = $this->subFormSession->subforms->getSubForm('start');
    $this->view->form = $form;
}
However this is causing the application session to crash out with 
  Uncaught exception 'Zend_Session_Exception' with message 'Zend_Session::start() 
Any idea why this is having issues with the Zend Session?? 
thanks.