Hi,
I can't seem to find anyone else with this problem on the forum. I am not very good with programming but have managed to build and run the website from a theme and have had very few issues over the last 2 years. I have learnt a fair bit by self teaching and through this forum.
However, I recently encountered a problem that i am unable to solve. I have not changed any programming or anything on my site recently, however I can't seem to add anything to the cart. I tried to contact the theme creator but he has told me it's an issue with my Magento and not his theme. I have not updated my magento or applied any patches ever,
Could anyone tell me what the issue could be and/or how to solve this problem.
The URL for my site is www.orno.com.au
Thanks in advance 
Thank you for your reply
I have managed to fix the 404 not found error. And now I am back to trying to figure out why my shopping cart is not working. Is there any other information I can give for me to be able to solve my problem?? Before the problem first started I had definitely not touched any of the coding etc or added any new extensions.
I am unsure why this happened on a running website.
Since, my site was always working perfectly, I never updated anything - Do you think I need to update everything?? I am now a litlle scared of updating anything since I feel I might make the site crash again.
To all of you who are trying to help me , all your help is much appreciated in advance.
I am copying the code in the file for you!! Thank you for your help
<?php
require_once 'Mage/Checkout/controllers/CartController.php';
class Excellence_Ajax_IndexController extends Mage_Checkout_CartController
{
public function addAction()
{
$cart = $this->_getCart();
$params = $this->getRequest()->getParams();
if($params['isAjax'] == 1){
$response = array();
try {
if (isset($params['qty'])) {
$filter = new Zend_Filter_LocalizedToNormalized(
array('locale' => Mage::app()->getLocale()->getLocaleCode())
);
$params['qty'] = $filter->filter($params['qty']);
}
$product = $this->_initProduct();
$related = $this->getRequest()->getParam('related_product');
/**
* Check product availability
*/
if (!$product) {
$response['status'] = 'ERROR';
$response['message'] = $this->__('Unable to find Product ID');
}
$cart->addProduct($product, $params);
if (!empty($related)) {
$cart->addProductsByIds(explode(',', $related));
}
$cart->save();
$this->_getSession()->setCartWasUpdated(true);
/**
* @todo remove wishlist observer processAddToCart
*/
Mage::dispatchEvent('checkout_cart_add_product_complete',
array('product' => $product, 'request' => $this->getRequest(), 'response' => $this->getResponse())
);
if (!$cart->getQuote()->getHasError()){
$message = $this->__('%s was added to your shopping cart.', Mage::helper('core')->htmlEscape($product->getName()));
$response['status'] = 'SUCCESS';
$response['message'] = $message;
//New Code Here
$this->loadLayout();
Mage::register('referrer_url', $this->_getRefererUrl());
$toplink = $this->getLayout()->getBlock('top_cart')->toHtml();
$sidebar_block = $this->getLayout()->getBlock('cart_sidebar');
if($sidebar_block){
$sidebar = $sidebar_block->toHtml();
$response['sidebar'] = $sidebar;
}
if($toplink){
$response['topcart'] = $toplink;
}
}
} catch (Mage_Core_Exception $e) {
$msg = "";
if ($this->_getSession()->getUseNotice(true)) {
$msg = $e->getMessage();
} else {
$messages = array_unique(explode("\n", $e->getMessage()));
foreach ($messages as $message) {
$msg .= $message.'<br/>';
}
}
$response['status'] = 'ERROR';
$response['message'] = $msg;
} catch (Exception $e) {
$response['status'] = 'ERROR';
$response['message'] = $this->__('Cannot add the item to shopping cart.');
Mage::logException($e);
}
$this->getResponse()->setHeader('Content-Type', 'application/json; charset=UTF-8', true)->setBody(Mage::helper('core')->jsonEncode($response));
return;
}else{
return parent::addAction();
}
}
public function optionsAction(){
$productId = $this->getRequest()->getParam('product_id');
// Prepare helper and params
$viewHelper = Mage::helper('catalog/product_view');
$params = new Varien_Object();
$params->setCategoryId(false);
$params->setSpecifyOptions(false);
// Render page
try {
Mage::getSingleton('core/session')->setReferrerUrl($this->_getRefererUrl());
$viewHelper->prepareAndRender($productId, $this, $params);
} catch (Exception $e) {
if ($e->getCode() == $viewHelper->ERR_NO_PRODUCT_LOADED) {
if (isset($_GET['store']) && !$this->getResponse()->isRedirect()) {
$this->_redirect('');
} elseif (!$this->getResponse()->isRedirect()) {
$this->_forward('noRoute');
}
} else {
Mage::logException($e);
$this->_forward('noRoute');
}
}
}
/**
* Delete shoping cart item action
*/
public function deleteAction()
{
$id = (int) $this->getRequest()->getParam('id');
if ($id) {
try {
$this->_getCart()->removeItem($id)
->save();
} catch (Exception $e) {
$this->_getSession()->addError($this->__('Cannot remove the item.'));
Mage::logException($e);
}
}
$string = $this->_getRefererUrl();
$key = 'ajax';
$cnt = preg_match_all("#\\b(".$key.")\\b#usi", $string, $pocket);
if($cnt){
$url = Mage::getSingleton('core/session')->getReferrerUrl();
Mage::getSingleton('core/session')->unsReferrerUrl();
if(@$url){
$this->_redirectUrl($url);
}else{
$this->_redirectReferer(Mage::getUrl('*/*'));
}
}else{
$this->_redirectReferer(Mage::getUrl('*/*'));
}
}
}