Here is a straightforward guide to fixing this error and getting your arcade library running perfectly. 1. The Golden Rule: Never Rename Your ROMs
ROM sets are collections of data extracted from video game cartridges, CDs, or other game media, essentially the digital version of a game's content. For retro gaming enthusiasts, these sets are essential as they allow for the emulation of classic games on modern devices. However, the legality and sourcing of these sets have always been contentious. romset+is+unknown+fbneo+fixed+free
Before you start fixing anything, you need to know which version of FBNeo you are running. Here is a straightforward guide to fixing this