So I do:
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: require_once(/is/htdocs/myserver/www/piwik/libs/Smarty/Smarty.class.php) [function.require-once]: failed to open stream: Keine Berechtigung in /is/htdocs/myserver/www/piwik/core/Smarty.php on line 17 Backtrace --> #0 Piwik_ErrorHandler(2, 1 => ‘require_once(/is/htdocs/myserver/www/piwik/libs/Smarty/Smarty.class.php) [function.require-once]: failed to open stream: Keine Berechtigung’, 2 => ‘/is/htdocs/myserver/www/piwik/core/Smarty.php’, 3 => 17, 4 => array (‘class’ => ‘Piwik_Smarty’, ‘classPath’ => ‘Smarty’, ‘dir’ => ‘/core/’, ‘path’ => ‘/is/htdocs/myserver/www/piwik/core/Smarty.php’)) called at [/is/htdocs/myserver/www/piwik/core/Smarty.php:17]#1 require_once() called at [/is/htdocs/myserver/www/piwik/core/Smarty.php:17]#2 require_once(’/is/htdocs/myserver/www/piwik/core/Smarty.php’) called at [/is/htdocs/myserver/www/piwik/core/Loader.php:72]#3 Piwik_Loader::loadClass(‘Piwik_Smarty’) called at [/is/htdocs/myserver/www/piwik/core/Loader.php:109]#4 Piwik_Loader::autoload(‘Piwik_Smarty’) called at [:]#5 spl_autoload_call(‘Piwik_Smarty’) called at [/is/htdocs/myserver/www/piwik/core/View.php:42]#6 Piwik_View->__construct(’/is/htdocs/myserver/www/piwik/plugins/Live/templates/lastVisits.tpl’) called at [/is/htdocs/myserver/www/piwik/core/View.php:319]#7 Piwik_View::factory(‘lastVisits’) called at [/is/htdocs/myserver/www/piwik/plugins/Live/Controller.php:96]#8 Piwik_Live_Controller->getLastVisitsStart(array () called at [:]#9 call_user_func_array(array (0 => Piwik_Live_Controller::__set_state(array(‘pluginName’ => ‘Live’, ‘strDate’ => ‘2011-09-04’, ‘date’ => Piwik_Date::__set_state(array(‘timestamp’ => 1315170700, ‘timezone’ => ‘UTC’)), ‘idSite’ => 1, ‘site’ => Piwik_Site::__set_state(array(‘id’ => 1)))), 1 => ‘getLastVisitsStart’), 1 => array ()) called at [/is/htdocs/myserver/www/piwik/core/FrontController.php:127]#10 Piwik_FrontController->dispatch(array () called at [/is/htdocs/myserver/www/piwik/index.php:53]