Piwik-folder as symlink

Hi,

i installed piwik over ‘www.example.org/_piwik/’ (/srv/www/example/_piwik).
But ‘_piwik’ is a symlink to ‘/srv/config/piwik/’. I used generated Piwik-Tag, but
it seems not to work. i tried to request:

www.example.org/_piwik/piwik.php?idsite=1

… and this request has been tracked.

what could be the problem ?

best,
heinetz