I think if the ROM file has an irregular character in its name it is unable to launch, as any that contained the word ‘pokémon’ failed, but those that didn’t launched fine. I renamed all cases to ‘pokemon’ & everything seems to launch properly now.
Hi, thank you for reporting this issue! I initially avoided names with accents because the font I use doesn't have those characters, but I've added a fallback font in case a ROM contains accented characters, which can definitely happen with Pokémon games. I've uploaded a new build that fixes it.
