Illegal offset type

Hello! I see this error on every page! Can you help me?

Warning: Illegal offset type in /stats/lang/pt-br.php on line 196

Backtrace -->

#0 Piwik_ErrorHandler(…) called at [/stats/lang/pt-br.php:196]
#1 require(…) called at [/stats/plugins/LanguagesManager/API.php:129]
#2 Piwik_LanguagesManager_API->getAvailableLanguageNames(…) called at [/stats/plugins/LanguagesManager/LanguagesManager.php:97]
#3 Piwik_LanguagesManager->getLanguagesSelector(…) called at [/stats/plugins/LanguagesManager/LanguagesManager.php:69]
#4 Piwik_LanguagesManager->showLanguagesSelector(…) called at [:]
#5 call_user_func_array(…) called at [/stats/libs/Event/Dispatcher.php:284]
#6 Event_Dispatcher->postNotification(…) called at [/stats/core/PluginsManager.php:723]
#7 Piwik_PostEvent(…) called at [/stats/core/Menu/Top.php:64]
#8 Piwik_Menu_Top->get(…) called at [/stats/core/Menu/Top.php:77]
#9 Piwik_GetTopMenu(…) called at [/stats/core/Controller.php:473]
#10 Piwik_Controller->setBasicVariablesView(…) called at [/stats/core/Controller/Admin.php:28]
#11 Piwik_Controller_Admin->setBasicVariablesView(…) called at [/stats/plugins/UsersManager/Controller.php:177]
#12 Piwik_UsersManager_Controller->userSettings(…) called at [:]
#13 call_user_func_array(…) called at [/stats/core/FrontController.php:138]
#14 Piwik_FrontController->dispatch(…) called at [/stats/index.php:53]

reupload all piwik files in particular the ones in lang/