Hi Brett - thanks once again for your help. I did as instructed (I removed the carriage returns that were at the end of ubbt.inc.php, ubbt_header.tmpl, and ubbthreads.tmpl) but it did not make any difference.
The actual code on line 1723 of ubbt.inc.php is:
</font><blockquote><font size="1" face="">quote:</font><hr /><font size="" face="">
1722 else {
1723 setcookie("w3t_mysess","$newsessionid","0","{$config['cookiepath']}");
1724 }
</font><hr /></blockquote><font size="" face="">Some more detailed notes on this problem:
> it only occurs when you click the picture on the index page to enter the boards, after that when you return to the forum index it is no longer there.
> you have to be logged in, anonymous users never see this error.
Any clearer?!?!
~tg