Issue: tabs messed up after upgrade

ErrorDocument 404 http://www.blincmagazine.com/404.php

# Comment the following line (add '#' at the beginning)
# to disable mod_rewrite functions.
# Please note: you still need to disable the hack in
# the vBSEO control panel to stop url rewrites.
RewriteEngine On

# Some servers require the Rewritebase directive to be
# enabled (remove '#' at the beginning to activate)
# Please note: when enabled, you must include the path
# to your root vB folder (i.e. RewriteBase /forums/)
RewriteBase /forum/

##############################
# Vault Wiki rewrite settings:
RewriteRule ^wiki.php(.*)$ showwiki.php$1 [L,QSA]


# Simple URLs....
RewriteRule ^showwiki.php?title=(.*)$ wiki/$1 [L,R=301]



# Default Namespace...
# If you are using Simple URLs, use this rule:
RewriteRule ^wiki/wiki:(.*)$ wiki/$1 [L,R=301]

# If you are NOT using Simple URLs, use this rule:
RewriteRule ^showwiki.php?title=wiki:(.*)$ showwiki.php?title=$1 [L,R=301]



# Simple URLs, revisited...
RewriteRule ^wiki/(.*)?$ showwiki_proxy.php [L,QSA]



##############################

RewriteRule ^((urllist|sitemap_).*\.(xml|txt)(\.gz)?)$ vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]

RewriteCond %{REQUEST_URI} !(admincp/|modcp/|cron|vbseo_sitemap)
RewriteRule ^((archive/)?(.*\.php(/.*)?))$ vbseo.php [L,QSA]


RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !/(admincp|modcp|clientscript|cpstyles|images)/
RewriteRule ^(.+)$ vbseo.php [L,QSA]

		if (!$vbulletin->products['crawlability_vbseo'])
		{
			$use_bburl = $vbulletin->options['bburl'];

		if (!$vbulletin->products['crawlability_vbseo'] OR !VBSEO_BASEDEPTH OR !defined('VBSEO_PREPROCESSED'))
		{
			$use_bburl = $vbulletin->options['bburl'];