Benjamin and Tobias: thanks for your replies. This is the first time that I do an update of my wiki and therefore I am still not clear about what really goes on when I run index.php in mw-config. To my mind there are two problems in my case, which may or may not be related: 1. index.php is displayed without styles 2. the routine doesn't see the existing installation 1. Styles: Does it really matter, what skins are in defined in LocalSettings.php? As far as I understand it, LocalSettings.php is not executed during the upgrade process. Only its existence matters, as it implies that I want to upgrade my existing wiki. If it were read, why would I have to supply information about the database, when this information is stored in LocalSettings.php and the upgrader could read it itself. I thought that the styles needed to display index.php properly were stored in mw-config and in its subdirectory, images. 2. locating files Again, I am not clear about what the routine does. To my mind, the upgrader should look into the parent-directory of mw-config, ie. the root directory, and should look for LocalSettings.php. The file is there, I can see it, but the routine can't. Why? And finally, are the two problems related? Thanks, Andreas Am 07.04.2016 um 09:20 schrieb Tobias Oetterer: -- ------------------------------------------------------------------------ i.A. Andreas Johannsen, Koordination Verein für Internationale Jugendarbeit Frankfurt am Main e.V. Lindenstraße 16 61440 Oberursel Telefon: 06171 - 508 2012 Fax: 06171 - 508 2016 E-Mail: andreas.johannsen(a)vij.de <mailto:andreas.johannsen@vij.de> Internet: www.vij-frankfurt.de <http://www.vij-frankfurt.de>