CMS Create New Article not working
 

Installation:

Running: vb 4-0-2 + vBSEO 3.5.0 RC2.

In admincp > settings > server settings & optimization options =>
Friendly URLs = Standard URLs

In vbseo > CMS URLs => 002 - Hierarchic directory type URLs with content relevant threads

Situation:

Whenever I try to add a new article to any of my sections vb returns the following message:

Quote:
"Page Not Found - Invalid Route - The page that you have requested was not found. If you followed a valid link, please notify the administrator"

Entering new post/thread to forum = ok
Entering new blog = ok

Problem persists across all CMS sections.

CMS Home page = http://domain.com
Forum page [NOT home page] = http://domain.com/forum.php

Installed: vbadvanced Links Directory + VaultWiki [both latest versions]

In .htaccess [located within root]

Quote:
RewriteEngine on
# If you are having problems or are using VirtualDocumentRoot, uncomment this line and set it to your vBulletin directory.
# RewriteBase /forum/
RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
RewriteRule ^threads/.* showthread.php [QSA]
RewriteRule ^forums/.* forumdisplay.php [QSA]
RewriteRule ^members/.* member.php [QSA]
RewriteRule ^blogs/.* blog.php [QSA]
RewriteRule ^entries/.* entry.php [QSA]
RewriteRule ^wiki.php$ showwiki.php [L,QSA]
RewriteRule ^wiki.php?title=(.*)$ wiki/$1 [L,R=301]
RewriteRule ^wiki/Default:(.*)$ wiki/$1 [L,R=301]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^wiki/(.*)?$ showwiki_proxy.php [L,QSA]
RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
RewriteRule ^(?:(.*?)(?:/|$))(.*|$)$ $1.php?r=$2 [QSA]

Could anyone provide advise on how to tackle this issue?

Thanks all!