Thanks for your help.
I am the server admin, and trying to perform an upgrade for a customer.
I kept on clicking on the link (circled in red in this picture) which leads to the German instructions. At first, I ignored the link from the menu on the left, which is the correct English version.
![Image](https://web.archive.org/web/20090322140938im_/http://img216.imageshack.us/img216/7374/upgradesiteqk1.jpg)
The upgrade instructions are a bit confusing even in English, but I managed to figure out most of it. I'm not sure what I'm supposed to do with 'adjusting' the template_default.inc.php and frontend.css files.
Also at one point during the database upgrade I have obtained the following error:
ERROR: Can't DROP 'acat_alias'; check that column/key exists -> ALTER TABLE `phpwcms_articlecat` DROP INDEX `acat_alias`, ADD INDEX `acat_alias` (`acat_alias`);
Strangely though, that acat_alias field of phpwcms_articlecat table actually exists.
In the end, after completing the upgrade, the site will not come up with a PHP fatal error: Call to undefined function: build_dhtmlmenu() in /var/www/vhosts/ammetropole.ca/httpdocs/template/inc_script/frontend_render/css_dropdown.php on line 1