I just noticed this when I went to go fetch some tools for a solution to my forum question (at this time the first and only, but probably not for long ). I logged in to the Torchmodders forum directly, so the main page and wiki do not have me authenticated.

Then I authenticated on the main page and got this error upon entry to the wiki:
Warning: mdecrypt_generic() [function.mdecrypt-generic]: An empty string was passed in /home/torchlig/public_html/torchmodders.com/wiki/inc/phpseclib/Crypt_Base.php on line 915

Warning: Cannot modify header information - headers already sent by (output started at /home/torchlig/public_html/torchmodders.com/wiki/inc/phpseclib/Crypt_Base.php:915) in /home/torchlig/public_html/torchmodders.com/wiki/inc/auth.php on line 542

Warning: Cannot modify header information - headers already sent by (output started at /home/torchlig/public_html/torchmodders.com/wiki/inc/phpseclib/Crypt_Base.php:915) in /home/torchlig/public_html/torchmodders.com/wiki/inc/actions.php on line 217
My guess would be this is something related to Single Sign-On, but I'm not 100% sure.

Also, those error messages look quite revealing. I see a Linux box, for one, is running this site. Those errors should be kept to a log (I'd assume they are already) and a user-friendly version should be output to the screen that doesn't tell me the username of the Linux server running this.

Hi.

This site is long overdue for an overhaul. Well, actually it needs some love and attention, which I've not given it for a while. I'll start looking into upgrading the various sections. Both the forum and wiki needs an update, but there are some issues related to the automagic update process of this. I'll try to fix it though. 

SSO (JFusion) probably needs an update too. It has always had some issues with the wiki.

I'll start doing some maintenance work over the next few days. Hopefully I don't break things... 

Thanks so much Wolven!