Ok , i installed FAQ plugin it works fine by itself. 

I translated oxwall to a different language. works fine.

When is switch from english to different language, some buttons and widjets lose their names, witch is normal. You just go to widjet or table settings and type in a new name.

I try to do that with FAQ or FAQ art plugin and get this:

Fatal error: Call to a member function setValue() on a non-object in /home/makc/public_html/ow_system_plugins/admin/controllers/pages_edit_plugin.php on line 76

How to fix that? Thanks.