I downloaded the program, and it's great and it definitely works for the Dragon Balls and 100% completition, but I can't get Disc Fusion to work at all. I'm not entirely sure if it's meant to unlock the Disc Fusion modes by itself, or allow Disc Fusion to work without changing disks, but either way neither works.

When I try to go to Disc Fusion, it just gives me the usual "please open the front tray" message, and that's as far as it goes.

I'm using PCSX2 1.0.0, with Budokai Tenkaichi 3 USA from a DVD, not an ISO. Is that the problem?

Nah nothing you do is the problem;3, seems I didn't even checked that option properly initially or messed with some of the updates as it was pretty simple code to begin with>.>, gonna check what's wrong and fix it. Thanks for the bug report.

Edit: Fixed in latest version>.>.
There was a silly problem, but I also found out, the code will not work on a game if disc fusion already was used without success earlier on current game(savestates counts). Just restart the game/emulation and continue from normal save, the cheat should then work just fine, it can also be deactivated after entering disc fusion as the game saves this info until the restart. Added note about this to the button mouse-over info as well.

It works now! Great job! Thank you!