ragnarok help

so i have been playing ragnarok for a few days just fine on my r4, but now i cant load it up anymore. i have ysmenu and ive tried playing it through that and it doesnt work, and ive also tried playing it just off the r4, but still nothing, and idk why this happened

If it was working before, and isn't working now, then try to backup your files (move them from your MicroSD to your computer) and format your MicroSD. Put the files back on your MicroSD, with a fresh install of your flashcarts latest firmware.

thanks ill try that and see what happens