The magic method __toString() must have public visibility and cannot be static 
in '/usr/www/simonews.com/piwik/core/TablePartitioning.php' at the line 89

#0  Piwik_ErrorHandler(2, The magic method __toString() must have public visibility and cannot be static, /usr/www/simonews.com/piwik/core/TablePartitioning.php, 89, Array ([GLOBALS] => Array ( *RECURSION*,[_POST] => Array (),[HTTP_POST_VARS] => Array (),[_GET] => Array (),[HTTP_GET_VARS] => Array (),[_COOKIE] => Array ([PHPSESSID] => 3171d31f2878b8ad6fab553d1e9c8c52),[HTTP_COOKIE_VARS] => Array ([PHPSESSID] => 3171d31f2878b8ad6fab553d1e9c8c52),[_SERVER] => Array ([UNIQUE_ID] => rdcNLMCoAWMAAIlROaoAAAAE,[HTTP_X_CC_ID] => ccc03-01,[HTTP_HOST] => www.simonews.com,[HTTP_USER_AGENT] => CCBot/1.0 (+http://www.commoncrawl.org/bot.html),[HTTP_ACCEPT] => text/html,application/xhtml+xml,text/xml;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5,[HTTP_ACCEPT_LANGUAGE] => en-us,en;q=0.5,[HTTP_ACCEPT_ENCODING] => gzip,[HTTP_ACCEPT_CHARSET] => ISO-8859-1,utf-8;q=0.7,*;q=0.7,[HTTP_CONNECTION] => close,[HTTP_CACHE_CONTROL] => no-cache,[HTTP_PRAGMA] => no-cache,[HTTP_COOKIE] => PHPSESSID=3171d31f2878b8ad6fab553d1e9c8c52,[PATH] => /sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/root/bin,[SERVER_SIGNATURE] => 
Apache/2.0.63 (FreeBSD) PHP/5.3.2 mod_ssl/2.0.63 OpenSSL/0.9.8k Server at www.simonews.com Port 80
,[SERVER_SOFTWARE] => Apache/2.0.63 (FreeBSD) PHP/5.3.2 mod_ssl/2.0.63 OpenSSL/0.9.8k,[SERVER_NAME] => www.simonews.com,[SERVER_ADDR] => 83.65.30.6,[SERVER_PORT] => 80,[REMOTE_ADDR] => 38.107.191.102,[DOCUMENT_ROOT] => /usr/www/simonews.com/htdocs,[SERVER_ADMIN] => os@simonconsulting.at,[SCRIPT_FILENAME] => /usr/www/simonews.com/piwik/index.php,[REMOTE_PORT] => 11620,[GATEWAY_INTERFACE] => CGI/1.1,[SERVER_PROTOCOL] => HTTP/1.1,[REQUEST_METHOD] => GET,[QUERY_STRING] => ,[REQUEST_URI] => /piwik/index.php,[SCRIPT_NAME] => /piwik/index.php,[PHP_SELF] => /piwik/index.php,[REQUEST_TIME] => 1280482991),[HTTP_SERVER_VARS] => Array ([UNIQUE_ID] => rdcNLMCoAWMAAIlROaoAAAAE,[HTTP_X_CC_ID] => ccc03-01,[HTTP_HOST] => www.simonews.com,[HTTP_USER_AGENT] => CCBot/1.0 (+http://www.commoncrawl.org/bot.html),[HTTP_ACCEPT] => text/html,application/xhtml+xml,text/xml;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5,[HTTP_ACCEPT_LANGUAGE] => en-us,en;q=0.5,[HTTP_ACCEPT_ENCODING] => gzip,[HTTP_ACCEPT_CHARSET] => ISO-8859-1,utf-8;q=0.7,*;q=0.7,[HTTP_CONNECTION] => close,[HTTP_CACHE_CONTROL] => no-cache,[HTTP_PRAGMA] => no-cache,[HTTP_COOKIE] => PHPSESSID=3171d31f2878b8ad6fab553d1e9c8c52,[PATH] => /sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/root/bin,[SERVER_SIGNATURE] => 
Apache/2.0.63 (FreeBSD) PHP/5.3.2 mod_ssl/2.0.63 OpenSSL/0.9.8k Server at www.simonews.com Port 80
,[SERVER_SOFTWARE] => Apache/2.0.63 (FreeBSD) PHP/5.3.2 mod_ssl/2.0.63 OpenSSL/0.9.8k,[SERVER_NAME] => www.simonews.com,[SERVER_ADDR] => 83.65.30.6,[SERVER_PORT] => 80,[REMOTE_ADDR] => 38.107.191.102,[DOCUMENT_ROOT] => /usr/www/simonews.com/htdocs,[SERVER_ADMIN] => os@simonconsulting.at,[SCRIPT_FILENAME] => /usr/www/simonews.com/piwik/index.php,[REMOTE_PORT] => 11620,[GATEWAY_INTERFACE] => CGI/1.1,[SERVER_PROTOCOL] => HTTP/1.1,[REQUEST_METHOD] => GET,[QUERY_STRING] => ,[REQUEST_URI] => /piwik/index.php,[SCRIPT_NAME] => /piwik/index.php,[PHP_SELF] => /piwik/index.php,[REQUEST_TIME] => 1280482991),[_ENV] => Array (),[HTTP_ENV_VARS] => Array (),[_FILES] => Array (),[HTTP_POST_FILES] => Array (),[_REQUEST] => Array ([PHPSESSID] => 3171d31f2878b8ad6fab553d1e9c8c52),[piwik_minimumPHPVersion] => 5.1.3,[piwik_currentPHPVersion] => 5.3.2,[piwik_zend_compatibility_mode] => ,[_Event_Dispatcher] => Array ([NotificationClass] => Event_Notification),[HTTP_SESSION_VARS] => Array (),[_SESSION] => Array ())) called at [/usr/www/simonews.com/piwik/core/ArchiveProcessing.php:12]
#1  require_once() called at [/usr/www/simonews.com/piwik/core/ArchiveProcessing.php:12]
#2  require_once(/usr/www/simonews.com/piwik/core/ArchiveProcessing.php) called at [/usr/www/simonews.com/piwik/core/Archive.php:14]
#3  require_once(/usr/www/simonews.com/piwik/core/Archive.php) called at [/usr/www/simonews.com/piwik/core/FrontController.php:29]
#4  require_once(/usr/www/simonews.com/piwik/core/FrontController.php) called at [/usr/www/simonews.com/piwik/index.php:46]