[Xenon]

????

are you sure your showthread.php has this lines in it?

PHP Code:

if ($thread[open]) { 
  $replyclose="{replyimage}"; 
  $thread[closereason]=""; 
} else { 
  $replyclose="{closedthreadimage}"; 
  if (trim($thread[closereason])) { 
  $thread[closereason]=bbcodeparse2($thread[closereason],0,1,1,1); 
  eval("\$thread[closereason] = \"".gettemplate("showthread_closereason")."\";"); 
  } else { 
    $thread[closereason] = ""; 
  } 
} 


because if you don't have this lines exactly like i posted here, you don't have installed the latest version, and then it's logical that you have to use other variables (because in the old version the variable was called $closereason )