Install script of beta4 (complete tar) doesn't run install script (WSOD)

I installed the complete beta4 that comes from http://www.phpedu.org.uk/.

When pointing the browser to the homepage I get a blank page (WSOD). Adding these lines to index.php:
error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);
I receive lots of warnings about non existing tables and variables:

Warning: Table 'phpedu.access' doesn't exist query: SELECT 1 FROM access WHERE type = 'host' AND LOWER('127.0.0.1') LIKE LOWER(mask) AND status = 0 LIMIT 0, 1 in /var/www/phpedu-beta4/includes/database.mysqli.inc on line 128

Warning: Table 'phpedu.users' doesn't exist query: SELECT u.*, s.* FROM users u INNER JOIN sessions s ON u.uid = s.uid WHERE s.sid = 'tu5vm8dvtq6ns91ffst2eahav7' in /var/www/phpedu-beta4/includes/database.mysqli.inc on line 128

Warning: Table 'phpedu.cache' doesn't exist query: SELECT data, created, headers, expire, serialized FROM cache WHERE cid = 'variables' in /var/www/phpedu-beta4/includes/database.mysqli.inc on line 128

Warning: Table 'phpedu.variable' doesn't exist query: SELECT * FROM variable in /var/www/phpedu-beta4/includes/database.mysqli.inc on line 128

Notice: Undefined variable: variables in /var/www/phpedu-beta4/includes/bootstrap.inc on line 480

Warning: Table 'phpedu.cache' doesn't exist query: UPDATE cache SET data = '', created = 1250153627, expire = 0, headers = '', serialized = 0 WHERE cid = 'variables' in /var/www/phpedu-beta4/includes/database.mysqli.inc on line 128

Notice: Undefined variable: variables in /var/www/phpedu-beta4/includes/bootstrap.inc on line 487

Warning: Table 'phpedu.system' doesn't exist query: SELECT name, filename, throttle FROM system WHERE type = 'module' AND status = 1 AND bootstrap = 1 ORDER BY weight ASC, filename ASC in /var/www/phpedu-beta4/includes/database.mysqli.inc on line 128

Warning: Table 'phpedu.url_alias' doesn't exist query: SELECT COUNT(pid) FROM url_alias in /var/www/phpedu-beta4/includes/database.mysqli.inc on line 128

Does the complete package not run the install script? How can I create the tables?

Werner