Have you edited the showthreaded file? You shouldnt have those paths in there...,

If you have it, upload the original copy of the showthreaded file from the zip and overwrite this one.

Otherwise, replace:

Code
// Require the library
   require ("../../../QuickReply3.1.1/orig%20files/main.inc.php");
   require ("languages/${$config['cookieprefix']."w3t_language"}/showthreaded.php");
   require ("../../../QuickReply3.1.1/orig%20files/imagesizes.php");

with:

Code
 // Require the library
   require ("main.inc.php");
   require ("languages/${$config['cookieprefix']."w3t_language"}/showthreaded.php");
   require ("imagesizes.php");

Kristi Horn
Customer Advocate
Infopop Corporation