Hi,
The uploader get the wrong resource file path on your site, please try the way below, it will fix your issue.
1. Open file \phpuploader\include_phpuploader.php
2. Find section below
$cd=dirname($this->GetWebPath(__FILE__));
3. Change it to
$cd=dirname($_SERVER['SCRIPT_NAME']).'/phpuploader';
If you still can not make it work, please set up ftp access for us and send the info to Kenneth@CuteSoft.net, I will check the code for you directly.
Regards,
Ken