[rexford.kim]

When I try to use the MediaWiki/vBulletin Single Sign-On and try to edit the MediaWiki pages I get this error from MediaWiki and I get Apache errors for PHP. If I do not use the Single Sign-On edits to the MediaWiki page go through fine.

I CANNOT edit the mediawiki or save preferences with the Single Sign-On installed. I did the /includes/User.php edit but I still cannot EDIT!

Open wiki/includes/User.php FIND:
PHP Code:
define( 'EDIT_TOKEN_SUFFIX', '+\\' );
Replace with:
PHP Code:
define( 'EDIT_TOKEN_SUFFIX', '+#+' );

How do you get rid of the PHP errors concerning the CWD error!?!?!?

[Wed Aug 19 17:47:02 2009] [error] [client 10.15.15.41] PHP Notice: Constant CWD already defined in /var/www/html/forum/global.php on line 16, referer: http://www.website.com/wiki/index.ph...&action=submit


Sorry! We could not process your edit due to a loss of session data. Please try again. If it still doesn't work, try logging out and logging back in.

Posted Solution on MediaWiki that does not work for me.
Assuming you get this error even when you do have a seemingly valid logon session:

Check if /var/lib/php5 is writable and not readable for user and world ( # chmod 733 /var/lib/php5 )
Check to see if your session.save_path value in php.ini is valid and writable to the webserver - PHP configuration.
Check to see if there is enough disk space.

After making changes restart Apache:

/etc/init.d/httpd restart

I get Apache errors for PHP:

[Wed Aug 19 17:47:02 2009] [error] [client 10.15.15.41] PHP Notice: Use of undefined constant VB_SYSTEM_PATH - assumed 'VB_SYSTEM_PATH' in /var/www/html/wiki/LocalSettings.php on line 28, referer: http://www.website.com/wiki/index.ph...&action=submit

[Wed Aug 19 17:47:02 2009] [error] [client 10.15.15.41] PHP Notice: Constant CWD already defined in /var/www/html/forum/global.php on line 16, referer: http://www.website.com/wiki/index.ph...&action=submit

[Wed Aug 19 17:47:02 2009] [error] [client 10.15.15.41] PHP Notice: Use of undefined constant VB_SYSTEM_PATH - assumed 'VB_SYSTEM_PATH' in /var/www/html/wiki/LocalSettings.php on line 28, referer: http://www.website.com/wiki/index.ph...&action=submit

[Wed Aug 19 17:47:02 2009] [error] [client 10.15.15.41] PHP Notice: Constant CWD already defined in /var/www/html/forum/global.php on line 16, referer: http://www.website.com/wiki/index.ph...&action=submit