Backend page toolbar missing

-- url of the page with the problem -- : admin page
-- HikaShop version -- : 2.3.0
-- Joomla version -- : 3.1.5
-- PHP version -- : 5.3.28
-- Browser(s) name and version -- : Firefox 28.0
-- Error-message(debug-mod must be tuned on) -- : Error_message

Hi,
what happened to my backend page ?
The toolbar disappeared .Any ideas for this ?

Sorry, my mistake , problem solved . I accidentally changed the menu position to under title .