Oh, my co-dev found it out. First, the /xwiki/
part of the given URL was not there in our case. So this seems to be optional. The second problem was that I then visited
- this URL .:
http://<yourwiki>//bin/edit/XWiki/XWikiPreferences?editor=object
- instead of:
http://<yourwiki>/bin/edit/XWiki/XWikiPreferences?editor=object
where the former leads me to the same “page not found” page and the latter works. So apparently, having two slashes makes it fail! Is that right? Should the docs be updated or do you think our case was unique? Cost me half an hour though…