I got a msg that you registered in vB - Thanks! - and this step seems to work...

Ok.. actually there is a need to update Userlogin.php - the same issue was affecting that file and your login form wasn't working from the wiki either.

Please download the (yet latest) version. Sorry about this; I added those variables after it was working on my site and I decided to redistribute it and forgot to declare them global. I shouldn't code on no sleep, heh.

After you've updated to the latest versions of the files can you let me know so I can test it out? Hopefully this clears the last of your remaining issues.

(Ups have not seen your last post)

... uploaded, but still this stupid bug...

why does he link to http://www.sinnimleben.net/login.php instead of http://www.sinnimleben.net/forum/login.php?

Bruno
If you want to have a look at the Files...

I just checked that - did you set $vbsso_wikipath in Userlogin.php? It looks like this variable isn't set. Everything else seems to work well.

yes, I did... in the post above you see all my changes.

Please check also the $wgGroupPermissions['*']['createaccount'] = false;

I do not understand this point...

and btw: THANKS!!!!

You have that properly set in LocalSettings.php. I also recommend you delete that attachment from your post now as it has login information for your MySQL database and could be used against you ;D

This is set to keep users from creating a wiki account through the wiki. It makes them create a forum account instead - which is the only way to log into the wiki after you have this hack installed.

... an idea why wiki logout still points to http://www.sinnimleben.net/login.php instead of http://www.sinnimleben.net/forum/login.php?

Because it's cached. If you're on FireFox or Internet Explorer, press <Ctrl+F5> on the wiki page and it will force a refresh of the page from the server. Alternatively, you can clear your cache and it will display properly. I just checked it on your site and it's working.