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I've been having a loooong standing issue getting my mame games running in LaunchBox, took a long break and now I'm back at it determined to make this work. To start fresh and skip the old details: I recently downloaded the new 0.231 non-merged romset. To keep things simple for troubleshooting, I picked ~30 games and got them to work in mame 0.231. I reinstalled RetroArch and downloaded the mame 2003 plus core and scan directory only would find 4 games. I figured this out by performing a manual scan and it found all the games in the directory, Appears to be a RA bug, but most of these games will not play in RA and says they are missing files. If I try to play the games in RA, the game loads then just navigates back to LaunchBox main menu. In LaunchBox, RA emulator I can install the mame-current core, perform a manual scan and play the games successfully. I've read all the info out there and perhaps I'm just missing something. Here are my questions What am I not understanding/missing about the romset and how to get it working with the RA emulator, mame 2003 plus core? I previously used the clrmame pro guide by CriticalCid to upgrade from 0.222 > 0.231 but still had issues. Do I need to rollback my new 0.231 to a certain version to work with mame 2003 plus core? I also downloaded the 0.231 CHD's, do I just add the respective folders to the ROM directory? I believe I found the samples, assume these are just dropped in the samples directory? Can anyone find my .xlsx file that had my parts list I researched? ? Thanks in advance for any clarity you can provide me!

I know how to add the handheld border shaders through RetroArch like the GBA one which was included in RetroArch's initial download or shader update here: I find it much more enjoyable playing like this. Though I want to be able to add ones that I have downloaded like this Atari Lynx one: Problem is it does not have a .cfg file, it just came with the following:The .ini just has the following information in it: I know the short answer to this would just be to create a .cfg file, but I have tried and not succeeded. Has anyone done this before and if so would someone be so kind as to walk through it together and then hopefully others may benefit from it too. I have searched but have not found any tutorials or discussion detailing exactly this. Also, one more question. For systems that one may be using the same core like gambatte_libretro.cfg for the GB and GBC but wish to have different custom configure in order to have a different handheld border shader if you copy your gambatte_libretro.cfg in the RA config folder and name it to something like gambatte2_libretro.cfg will it show up in the RA UI options? Thank you in advance.