>>849
Bootstrap::_initView() に

$front->throwExceptions(true);
または
$front->setResponse(new Zend_Controller_Response_Http())
->getResponse()->renderExceptions(true);


ソースは以下
Zend_Controller_Front::dispatch()
} catch (Exception $e) {
if ($this->throwExceptions()) {
throw $e;
}
$this->_response->setException($e);
}

Zend_Controller_Response_Abstract::sendResponse()
if ($this->isException() && $this->renderExceptions()) {