Apologies if this is the wrong area to post this in. I've searched to see if anyone else has a similar problem but I can't find anything and I would have asked in the Libretro forums but I'm not allowed to for some reason.
My issue is that my Sega CD ISOs won't load in RetroArch using either PicoDrive or Gen Plus GX. I thought it may have been the way the games were packaged (ISO, CUE & WAV files) but I've used Daemon Tools and Imgburn to repackage them into BIN & CUE files but that didn't help.
I don't think it's a ROM problem as the original ISOs play well in PicoDrive on my PSP and they'll also run in Windows using Kega Fusion so it appears to be an issue with RetroArch but I can't figure out what. I've tried putting the BIOS files directly in the Sega CD ROMs folder and also in the System folder in the RetroArch directory but no deal. Both cores are telling me the BIOS files are present.
I have MAME, Neo Geo, CPS 1 & 2, Game Gear, Master System, Megadrive, 32x, SG 1000, GameBoy/GB Colour, GB Advance, DS, NES, SNES, N64, Lynx, Jaguar and even Steam games all running like a dream through Launchbox and ideally I'd like to use RetroArch for everything but I'm almost at the point of just leaving Fusion installed and telling Launchbox to use that just for Sega CD.
Any assistance would be appreciated.