Dissidia Final Fantasy

[Liutern]

Hello everyone!
I don't know if I should post this here, I'm sorry if this is not the right place. Also, I'm not a native English speaker, I apologize if there are any mistakes.

I downloaded the ISO file of Dissidia Final Fantasy. It works fine until I'm done putting the nickname, choosing the difficulty and the day of the week I play the most, then it goes to white screen for a moment and it crashes, with a window saying that PPSSPP stopped working. I also tried to download another ISO from another website (maybe the first one was corrupted), but it still doesn't work.
Any suggestions?