Okay, I looked for this function and found it still in usage in themes\default\template\controllers\orders\_documents.tpl
{if get_class($document) eq 'OrderInvoice'}
{if isset($document->is_delivery)}
{$document->getDeliveryNumberFormatted($current_id_lang, $order->id_shop)}
{else}
{$document->getInvoiceNumberFormatted($current_id_lang, $order->id_shop)}
{/if}
{elseif get_class($document) eq 'OrderSlip'}
{$document->getCreditSlipsNumberFormatted($current_id_lang, $order->id_shop)}
{/if}
I did comment out those lines. And the error is gonne. But the page still doesn't load correctly. I dont see any more errors (except for a depricated mycript function, which i solved like stated in this post:
Edit: I also added full text search results.
