Class 'Piwik_Smarty' not found

Support & Bugs
1

I’m now at 0.5.2 and I get

Fatal error: Class ‘Piwik_Smarty’ not found in /var/www/piwik.domain.org/htdocs/core/View.php on line 77

Anything I forgot to install?

2

please reupload all the files