showthread error

[driller]

hello when i enable the reply for the product when i click on it i get an error

Warning: main(./includes/functions_showthread.php): failed to open stream: No such file or directory in /home/virtual/site119/fst/var/www/html/reviews/header-inc.php on line 109

Fatal error: main(): Failed opening required './includes/functions_showthread.php' (include_path='.:/home/virtual/site119/fst/usr/share/pear:/usr/share/pear') in /home/virtual/site119/fst/var/www/html/reviews/header-inc.php on line 109

I am using vb 3.6.0

[Chuck S]

Hello if your using older reviewpost you may need to upgrade to the newest version