If mGBA worked before and now doesn’t, delete .cfg files.
Go to RetroArch Installation Folder > Config > then delete the mGBA folder there.
If this doesn’t solve your issue, then I don’t know what will, and this will be my last off-topic post regarding your issue.
Aw… welp… thanks.
I’m trying to make an RGUI Theme thar mimmicks a “9999999 in 1” bootleg cartridge menu, so I was just missing the custom font to get the full experience right.
I found the issue. Thank you. The game cfg file caused conflict.
there’s an issue here i have with mGBA when saving .cfg file for any rom. In case someone else could kindly test. The moment .cfg file is made, then core crashes with “Close content”.
Mesen core (NES) crashes to me, it does not matter if removing all 3 files for each rom: .cfg, .slangp, .opt
That font has a custom format, but there is a description: https://docs.libretro.com/development/retroarch/new-translations/#generating-custom-font-for-rgui