I'm experiencing some problems as well. My game has the multiplayer update and I cant edit my GPD file with the editor. Maybe someday.
Reuploaded the editor as attached file, but please note that this editor is not made for the newest TU.
If it's not working try to start the game without the TU.
Please update the editor please... it doesn't let me edit the GPD it says it cannot be opened, I tried it with another gpd and it let me edit it after a few tries. I then put it back into the profile and it didn't work. I tried many times with many accounts. Any ideas, or am I doing something wrong?
Add Wallace Please, or ugh... How do I access Wallace through the save editor?