I have a ton of ROMs so to better organize some of the larger libraries I will set up an alphabetical folder structure along with an extra folder named #'s only problem is that when using them through LaunchBox RA won’t launch the game and if you go into RA and try to manually start the game the #'s folder is listed at the top with the small s only and it is a complete duplicate of the S folder. I don’t know if this is a bug or not or if maybe RA doesn’t recognize symbols in the folder structure intentionally.
We use the # character to denote an archive. For example, name.zip#name.rom. So, it might be getting confused there. Probably best to rename ‘#s’ to ‘0-9’.