Forma Tried to get PB chess

so, my kobo just came! after poking around a bit, I chose to get pbchess. it was going smoothly, got launcher.png, but then after I moved over the other files it froze and than updated. after the update... launcher.png still only opens a image, but now I have 12 pages of stuff for pb chess UI. somthing went wrong. what did I do? (assuming root folder is .kobo).
if I did something wrong, what? also, how can I delete all the stuff?