For example, Street Fighter II might have a "World Version," a "USA Version," and a "Japanese Version." Each of these has a specific ROM file structure.
In the Scanner menu, check the boxes for Check SysDef , Romsets , Names , and Size . Under the "Fix" column, check Name , Size , and Remove Unneeded . Click New Scan .
If you put a game ZIP file in your folder but it's missing even one essential file (like a BIOS file, a sound chip file, or a graphics ROM), FBNeo will throw the "unknown" error or state that "the romset is missing files".
I can provide specific folder paths and configuration steps based on your setup. Share public link
