I Click Threads And I Get A Header Error!

I already switched Forum Style to several different ones but I keep getting the error:

"Unable to add cookies, header already sent.
File: /home2/pokecomm/public_html/includes/class_postbit.php(294) : eval()'d code
Line: 123"

What is this? I can click anything in the Official Forums but all the other forums are blocked by this error.

Javascript is enabled for the entire forum btw; it's not from me in any case. It worked 30min ago; there's no reason for it to suddenly stop working.

Thanks :) It works now.

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> post approved by the sexy administration team as being acceptable for fillerfiller <