Makerbuino isn't loading any new games or hex files

Whenever I try to add a game or hex file to the sd card and insert it in the console it seems fine, but when I turn on the console the rest of the games are there except the ones I try to add. Help

I tried again today and for some reason the games were there, but as soon as I exited one of them they both disappeared

The files I tried to upload were sokobuino.hex and .inf, senet.hex and .inf and a hex file I wrote and that worked when I uploaded to the console through Arduino ide. I would attach them but Iā€™m a new user so I cant. The two games can be found in the makerbuino games gallery as well.