Fatal error: when I add a new product

-- HikaShop version -- : 2.5.0
-- Joomla version -- : 3.4.3
-- Browser(s) name and version -- : all
-- Error-message(debug-mod must be tuned on) -- : Fatal error: Call to a member function display() on a non-object in /home/otticapo/public_html/administrator/components/com_hikashop/views/product/tmpl/common.php on line 75

sorry for my bad English

the website and the component works fine
the administrative works fine
the administrative side component does not give me no problem, except when I want to add a new product, the form opens as the image and gives me the following error: Fatal error: Call to a member function display () on a non-object in /home/XXXX/public_html/administrator/components/com_hikashop/views/product/tmpl/common.php on line 75

so far I have done the following:

I changed template
I disabled the latest components installed
I reinstalled the current version of hikashop

but not 'change anything, I always error and I do not know how to fix, I do not understand how to fix it. Thanks for your kind availability

My English is a little rusty, and I did not understand what I want to say, translating with google ... if you can use another form to tell me the same thing. thank you...

I tried to:
- Overwrite template entirely administrative isis
- I have no customization

problem solved!!!
isis - product - form ... previously modified and now restored.

I apologize for my carelessness, I thank for their support!