After installation Error: Call to undefined function

linucks

Hello,

I've just installed a Zen-Galery on my Site:
http://www.kraniopharyngeom.de/fotos/

Here I got the following Error-Message:
Fatal error: Call to undefined function: zp_conf() in /www/htdocs/v112575/fotos/zen/functions-db.php on line 22

The Admin-Section is working fine.

Do you have any Ideas for this problem?

linucks

I now want to update some older installations on other Servers.
But I'm afraid to do that because of the error above.