Hi guys,
I recently got the following error message:
There is an error. Please report the message and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!).
Warning: Invalid argument supplied for foreach() in /is/htdocs/wp10596182_IKVGL8OJ9E/counter.paul-lazarus-stiftung.de/core/Menu/Admin.php on line 55
Backtrace -->
#0 Piwik_ErrorHandler(...) called at [/is/htdocs/wp10596182_IKVGL8OJ9E/counter.paul-lazarus-stiftung.de/core/Menu/Admin.php:55]#1 Piwik_GetCurrentAdminMenuName(...) called at [/is/htdocs/wp10596182_IKVGL8OJ9E/counter.paul-lazarus-stiftung.de/core/Controller.php:606]#2 Piwik_Controller_Admin->setBasicVariablesView(...) called at [/is/htdocs/wp10596182_IKVGL8OJ9E/counter.paul-lazarus-stiftung.de/plugins/UsersManager/Controller.php:157]#3 Piwik_UsersManager_Controller->userSettings(...) called at [:]#4 call_user_func_array(...) called at [/is/htdocs/wp10596182_IKVGL8OJ9E/counter.paul-lazarus-stiftung.de/core/FrontController.php:132]#5 Piwik_FrontController->dispatch(...) called at [/is/htdocs/wp10596182_IKVGL8OJ9E/counter.paul-lazarus-stiftung.de/index.php:53]
It can be reproduces by doing some user settings stuff, logout in another browser window an try to do some further user setting stuff in the first window.
Hope that helps, Cheers.