Lordmonkus

Since you mention Portuguese it could be a character in the path having an accent causing the issue.

Yeah, Reciast is now Flycast.

Try this, go to your Edit Emulator window for your Mame entry and in the Default Command Line Parameter box remove -keyboardprovider dinput

As for the guns I cannot help you with at all, I don't have any lightguns let alone 2 of them. When you imported your games did you use the Mame FullSet Import tool ? If you did try removing your games from LB and re-import by dragging all the games into LB and import the old way. You should be able to uncheck all the media stuff for the import so it should import fast.

Do your games work in Mame 171 on its own outside of LB ?

Ok, make sure that your mame.ini file is in the same folder as t he mame executable and not in the \ini sub folder of your mame install folder.

Edit your Mame emulator entry in LB and point it to your Mame 171 install.

Does this happen for other cores as well or just the 2600 ? Does it happen when you run Retroarch on its own as well ? Launchbox shouldn't be causing this to happen since all LB is does load t he emulator and rom via command line, it has no more interaction beyond that. If I had to take a guess at what could be happening it would be a video driver issue in Retroarch with your video card.

Why would you want this for Mame ? It would break it.

Yeah that was a weird one, the Change ROM Folder has always worked for me when I moved roms but I am glad the re-import work around worked for you.

Try turning on "Extract ROM Archive" in the Edit Emulator window for your Project 64 entry in LB. If you already have that off i'm not sure what else to try other than removing your N64 games and re-importing them. You won't have to redownload any media so you can uncheck all of those to speed up the import process.

Select all your N64 games in LB, then go to the Tools menu and Change ROMs Folder Path and point it the folder where your games are located.

Make sure you have your platform names matching, the platform name in LB and in the Associated Platforms in the Edit Emulator window needs to be named the same. Also make sure you have the correct core selected in the Associated Platforms.

Yup, and like I said, lots of other users are in the same boat.

That's a legit reason but I would suggest to give the first DonPachi a try, it's relatively accessible. Deathsmiles isn't terribly difficult either, I can get through the first 3 or sometimes 4 levels without dying, after that though is where it starts to mug me for my quarters. To be fair to the Cave games though, they do tend to have a "gimmick" that when properly used you can get through those "impossible" spots.

No but that is not something I care about.

Sure, lots of us never used it at all with Launchbox.

What ? This is not needed anymore, especially if using a relatively recent build of Launchbox where you don't even need to type in the command line parameters, you just choose the core from the dropdown menu. I have keep repeating this but make sure your bios are 100% correct first. They have the precise information needed on the Retroarch documentation page https://docs.libretro.com/library/beetle_pce_fast/#bios Once you are 100% certain the bios are correct then you need to find good disk image dumps, preferably from Redump, they are 100% accurate disk rips and will work every time with the correct bios.

You don't need the -c and config stuff unless you want to call a custom config file which really is no longer necessary with Retroarch's built in per core and per game override system.

Not currently.

Just out of curiosity but what do you consider to be "substance" in a SHMUP ? What is it that all your games listed has that all of the Cave games are missing in terms or "substance" ? We aren't talking about a genre of games where there is typically an in depth story or RPG mechanics or even a progression system. SHMUPs are at their very heart "dodge bullets and shoot things" games, nothing more. Of course we all have our preference and not all Cave games are great or even good but to throw them all in a pile say they have "no substance" I think deserves some sort of explanation as to why you think that. After all several of their games are consistently voted in the top 25 games over on the shmups.system11 forums and those are some pretty serious lovers of the genre.

That has changed recently.

A Pi is your best option then.

-L "cores\snes9x_libretro.dll"

I don't know, i'm not a programmer.