When trying to send PMs on the forums:

"Invalid Session. Please resubmit the form."

I just assumed it was a cookie glitch at my end, so I logged out and cleared my cookies. Still here, the problem started yesterday for me. I googled around, and apparently there's a fix that must be done on the server end.

Here's a link to the fix:

http://www.clanthemes.com/tutorials-...-the-form.html

I believe this is a phpBB based forum, so this should fix the problem for anyone experiencing this issue.

UPDATE:

I'm also seeing the following error randomly in some sub-forums at the top of the page:


"Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/sourceop/themes/hl2/theme.php:219) in /var/www/html/sourceop/modules/Forums/viewtopic.php on line 572"