-- HikaShop version -- : 2.6.1
-- Joomla version -- : 3.4.8
-- PHP version -- : 5.5.29
-- Browser(s) name and version -- : Chrome 48.0.2564.71 beta (64-bit)
Hello,
I couldn't update the status of an order (no popup) unless I replace the popup.php file in administrator/components/com_hikashop/helpers/ like explained in a previous post
It solved my first issue, but after the upload, the Hikashop Configuration page displays only links (like a site map) and further the "Configuration" link doesn't work, so I haven't access to all the configuration section of Hikashop 
Would you have an idea?
Thank you in advance !