[Help] Homebrew not working

So, I have my DSi with HiYA CFW and SDNAND installed. I got bored of the roms I have so I thought of getting gbaemu4ds (homebrew)
It failed to load through TWiLight Menu++ and Unlaunch gave me error: "fatinitDefault failed!"
I tried other homebrew (like hb games) to no avail.

Could somebody please help me as I don't have money for a flashcart.
Any and all help appreciated!