Problem with installation (could be missed file)

Hey,

I’ve try to install piwik, but when I open the index.php i get following error message:

Warning: require_once(Zend/Session/Abstract.php) [function.require-once]: failed to open stream: No such file or directory in /var/www/web4/html/scripte/piwik/libs/Zend/Session.php on line 28

Fatal error: require_once() [function.require]: Failed opening required 'Zend/Session/Abstract.php' (include_path='.') in /var/www/web4/html/scripte/piwik/libs/Zend/Session.php on line 28

the files Session.php and Abstract.php exist, what can I do?

Your system doesn’t allow setting the include path. Sorry.

What must my Hoster change that it works?

At this point, your host has to set the include path. See index.php.

ok, He would do it.