I am trying to add in Japanese jumps trainers to allow me to have japanese jumps runners, yet when I try to run a junps game with the modified trainer file the game crashes. Switch the file back to normal and it runs perfectly. I would also like to do this with the USA, and I was wondering whether the reason it doesn't work is because of the Id file which is flat only. So I was wondering if I copied the French and flat and jumps id and used it to replace the flat id, would this work? Can anyone help me?