OrderConfirmationController doesn't display TPL & footer disappeared

[jave.web]

(PrestaShop 1.4.7.0) In the OrderConfirmationController.php this line should display the order-confirmation.tpl:

self::$smarty->display(_PS_THEME_DIR_.'order-confirmation.tpl');

But now (we dont know why) it stopped displaying the TPL, for now we have done temporary fix like

public function displayContent()
{   //this displays:
    echo "Thank you for your order."; 
    parent::displayContent();
    //this doesn't display:
    self::$smarty->display(_PS_THEME_DIR_.'order-confirmation.tpl');
}

Before this "fix" the user got stuck on page with no content or footer:

empty #center_column, and no footer.

Everything else - header, left side bar are displayed....

 

User got stuck on url like :

example.com/order-confirmation.php?key=SOMESTRINGKEY&id_cart=CARTID&id_module=91&id_order=ORDERID

 

Could this crash be caused by some module or could an error in footer cause not-displaying the content too?

Or any other tips where the problem could be ?

 

Thank you in advance.

 

 

 

[jave.web]

It was caused by TPL processing error (probably in both TPLs), 

the javascript scripts contained these brackets " { " and " } " => that doesnt work well with smarty processing, so we fixed it by wrapping the <script> tags into the {literal}{/literal} like this:

{literal}
<script>
   function someFunction(){
      //...some code
   }
</script>
{/literal}