There is an error. Please report the message (Piwik 1.11.1) and full backtrace in the Piwik forums (please do a Search first as it might have been reported already!). Warning: htmlspecialchars() [<a href='function.htmlspecialchars'>function.htmlspecialchars</a>]: Invalid multibyte sequence in argument in /home/www/piwik/core/DataTable/Filter/SafeDecodeLabel.php on line 53 Backtrace --> #0 Piwik_ErrorHandler(...) called at [:] #1 htmlspecialchars(...) called at [/home/www/piwik/core/DataTable/Filter/SafeDecodeLabel.php:53] #2 Piwik_DataTable_Filter_SafeDecodeLabel::safeDecodeLabel(...) called at [/home/www/piwik/core/DataTable/Filter/SafeDecodeLabel.php:70] #3 Piwik_DataTable_Filter_SafeDecodeLabel->filter(...) called at [/home/www/piwik/core/DataTable.php:387] #4 Piwik_DataTable->filter(...) called at [/home/www/piwik/core/DataTable.php:414] #5 Piwik_DataTable->applyQueuedFilters(...) called at [/home/www/piwik/core/API/ResponseBuilder.php:300] #6 Piwik_API_ResponseBuilder->handleDataTable(...) called at [/home/www/piwik/core/API/ResponseBuilder.php:78] #7 Piwik_API_ResponseBuilder->getResponse(...) called at [/home/www/piwik/core/API/Request.php:129] #8 Piwik_API_Request->process(...) called at [/home/www/piwik/core/ViewDataTable.php:431] #9 Piwik_ViewDataTable->loadDataTableFromAPI(...) called at [/home/www/piwik/core/ViewDataTable/HtmlTable.php:80] #10 Piwik_ViewDataTable_HtmlTable->main(...) called at [/home/www/piwik/plugins/Actions/Controller.php:464] #11 Piwik_Actions_Controller->configureGenericViewActions(...) called at [/home/www/piwik/plugins/Actions/Controller.php:406] #12 Piwik_Actions_Controller->configureViewActions(...) called at [/home/www/piwik/plugins/Actions/Controller.php:46] #13 Piwik_Actions_Controller->getPageUrls(...) called at [:] #14 call_user_func_array(...) called at [/home/www/piwik/core/FrontController.php:136] #15 Piwik_FrontController->dispatch(...) called at [/home/www/piwik/index.php:52]
To fix the problem edit SafeDecodeLabel.php and replace line 53 :
$value = htmlspecialchars($value, $style, 'UTF-8');
by
$value = htmlspecialchars($value, $style);
UTF-8 charset wasn't forced in last release ;)
Don't forget to report the fix on 1.1.12
Best regards