[Mark]

Look for the function add_signature_to_post in bb-signatures.php, line 78 should look like;

$text.='<div class="signature">'.nl2br($signature).'</div>';

Change it to

$signature = nl2br($signature);

$text.='<div class="signature">'.bb_rel_nofollow($signature).'</div>';

Signatures problem most likely has to do with bb_send_headers(); on line 297, but I’d have to install it to find out for sure. If I can spare the time, I’ll let you know.