Effectively AdvDupe2 has been released and is available for usage. It fixes many issues and bugs that have plagued AdvDupe 1 since forever. If you want some more info on it and what it can do, here you go - http://www.facepunch.com/threads/1136597?p=33059461
It's now on the server. Report any issues here with it. A few notes- - You can only open a dupe that is 100kb in size or less. - Any dupes are cleaned up upon disconnection (or timeout) - The max area that can be used to dupe in one go is 1000 units.