I downloaded two psp games off emuparadise, gta san andreas and yakuza 2, both clearly iso files that run on ppsspp. I extracted using 7zip but when I try to load either in the emulator I get this error message: Could not find executable disc0:/PSP_GAME/SYSDIR/BOOT.BIN
This didn't happen when I loaded Corpse Party, another ISO file. I have no idea why there's an error with these two.