I renamed the forum, but it's still the same problem.
The wiki is located under "/wiki/", the forum is now located under "forum/lexikon/". In the "VaultWiki: Server-Settings" the filename of the Wiki PHP file is set so "wiki" and the wiki base url is set to "http://subdomain.domain.de".
When I add as an unregistered person a new article I get the message that the new article will be checked by a moderator and then I get redirected to "/wiki/forumdisplay.php?f=210" which is rewritten by VaultWiki to "/wiki/forumdisplay-php?f=210&forumid=210" and I get a page, that this article "forumdisplay php" has actually no text.
But why I'm redirected to "/wiki/forumdisplay.php?f=210" instead of "/forum/forumdisplay.php?f=210", which would be correct?
There are no other plugins using "redirect_generic", it's a clean vB installation with vb-Blog, vbSEO und VaultWiki.
It seems to me, that the changes in "New Thread - Rewrite Duplicate Redirect" has no effect. I changed the variables $url and $js_url to another url, but I always get redirected to the page above. In another test I switched off vbSEO in the vbSEO control panel, but nothing changed ... why is the wiki-root used for forumdisplay.php instead of the forum-root, that must be a problem somewhere in the VaultWiki.
I tested it in FF, IE and Safari with the same results, but I don't think, it's a browser-based problem, because the wrong url ("/wiki/forumdisplay.php?f=210") is hardly coded in the html of the vbulletin redirect page in meta-refresh, js and the normal link.