Problem with invoice

-- HikaShop version -- : 2.6.0
-- Joomla version -- : 3.4.8
-- Error-message(debug-mod must be tuned on) -- : Firebug errors:

SyntaxError: unterminated string literal
ReferenceError: invalid assignment left-hand side

Hi,

I can not print a invoice, the invoice is not displayed in the section orders the pop-up window, the administrative panel.

In firebug gives the following error:
SyntaxError: unterminated string literal
ReferenceError: invalid assignment left-hand Side

So what else is there:
addcslashes () expects exactly 2 parameters, 1 given in <b> /var/www/keks-store/data/www/keks-store.ru/layouts/joomla/modal/iframe.php

Saturday 02/13/16 everything worked perfectly, since no update does not produce the new components are not installed, and today is no longer working.

Maybe you guys any settings or fileschanged. I leave on ftp access for them to solve the problem on www.hikashop.com/forum/filters-search/88...y-filter.html#228256

Thanks, all good!