FS#1940 Unable to put DOKU_CONF outside document root

I downloaded the current dokuwiki version 2009-12-25c, extracted it into the docroot of a debian lenny apache http server. Afterwards I visited the /install.php I wanted to move the conf and data out of the document root. All seems to work.

According to http://www.dokuwiki.org/security#conf_directory I moved the conf dir one directory above the docroot and configured the DOKU_CONF variable in inc/preload.php. I tried a relative as well as a absolute path but in both cases the css is missing.

The css should be retrieved by the http://testwiki/lib/exe/css.php?s=all&t=default&tseed=... . But css.php only returns:

The datadir ('pages') does not exist, isn't accessible or writable.
You should check your config and permission settings.
Or maybe you want to <a href="install.php">run the
installer

The pages are stored in the correct directory.

I have another installation of dokuwiki which was upgraded to the current version all works good. Only new installations seems to have this bug.

Does anyone have an idea?

FS#1940 Unable to put DOKU_CONF outside document root

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