The problem is not the language you Loaded, but again, those who create the plugin, not allowing users to change the language of the application, which means again you have to choose English, depending on the program / plugin to use. For example, the plugin "Attachments", you can not use Norwegian or Swedish, as is the writing on the buttons away. For example, the plugin "Questions" Disappear mostly about using Norwegian or Swedish. Gave it does not help to install language
Forget the whole issue over here. I solved it by manually fixing the language admin control center