Homebrew Game Rhythm8: Black screen + Audio on launch, no rendering modes fix it

[Alo81]

The software I'm testing and that is most important for me is the homebrew software Rhythm 8.

It loads up fine and you can hear the music as it starts but it sits on a black screen. I've tried all the rendering modes but nothing fixed it. I tried disabling stencil and that didn't fix it either.

I'm using the 64bit version of PPSSPP.

I've also tested the 32bit version and it still didn't work.

If someone could help me with this I would be really, really grateful because this is the one program I spend the most time with my PSP on.

Moderator's edit: Here's a download link to the homebrew in question: http://wololo.net/downloads/index.php/download/508

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