Bravo List - Need some help with TBDev?

Hi there, I'm currently using TBDev 2010, as I was testing it out with Xampp, and I received this error?

Code:

Notice:  Use of undefined constant ROOT_PATH - assumed 'ROOT_PATH' in C:\xampp\htdocs\t\include\bittorrent.php on line 970

Site is down for maintenance, please check back again later... thanks

If you guys need the config or any file let me know, cause I love beta testing torrent stuff :).

oh test site, for you to see yourself.

Code:

http://124.185.148.14/t/login.php

Would love some help, Thanks KnightRaider :).