500 error when trying to enter Translator

[Omidnag]

Hi, 

When I try to enter translator I get an error message. When I have enabled so I can get more info about the error and this is what I got:

FatalThrowableError in Module.php line 3157:Call to a member function getTranslator() on null

1. in Module.php line 3157
2. at ModuleCore->isUsingNewTranslationSystem() in AdminTranslationsController.php line 224
3. at AdminTranslationsControllerCore->initMain() in AdminTranslationsController.php line 117
4. at AdminTranslationsControllerCore->initContent() in Controller.php line 253
5. at ControllerCore->run() in Dispatcher.php line 428
6. at DispatcherCore->dispatch() in index.php line 96