For some reason my 3DS has decided not to read my Omega Ruby cartridge. It is only the Omega Ruby cartridge. It reads my Y cartridge and Majora's Mask. I put it in my friend's 3DS and the same problem. The cartridge hasn't been damaged to my knowledge and has always been with my Majora's Mask cartridge in the small pocket of my backpack, but only Omega Ruby does not work. Any idea on how to fix this?