Fatal error: Class ‘Piwik_PDFReports’ not found in /var/www/html/web7/html/piwik/core/Updates/1.8.3-b1.php on line 76
Thanks for the report. please apply the following patch and try again: http://dev.piwik.org/trac/changeset/6788
If that’s not enough run in phpmyadmin or in your mysql server the following sql query:L
UPDATE piwik_option SET option_value = “1.8.3” WHERE option_name = “version_core”;
Thx!
It works