Installation Problem

Trying to install PIWIK on a MediaTemple GS server. I get to the database setup, enter the credentials and get this response and a kick back to the initial screen every time.

“Fatal error: Call to private method Piwik\Plugins\Installation\Controller::hasEnoughTablesToReuseDb() from context ‘’ in /domain/paths/html/piwik/plugins/Installation/Controller.php on line 203”

I have no idea what this means or how to fix it.

Please upgrade your PHP version or ask your webhost to, as it’s a bug in PHP