I need some help here, I am trying to change the music of the game from the europe BGM to japanese bgm. The music file is located into a file call Resource.cpk. I manage to open it with tools and the file structure is the same, even the music folder, same name and file name. The only difference is e...

I am trying change music from Euro to japan version and the music file is inside the cpk file. I manage to change the music to a different region but when I repack the file, the game refuse to run. Any advice?