answer:It’s possible that the file you’re trying to write to (when you attempt to save a game) isn’t owned by you or that you don’t have permission to modify it. Also, if the program is poorly written it’s possible that it assumes you will have created the file before you start and will error out when it discovers that the file does not exist. When you tried creating the file, was the file created successfully? Can you check the permissions and ownership of the created file, and those of its parent folder? Have you successfully used FCEULtra with other ROMs, including successfully saving games? Does FCEUltra come with any useful docs? It might, for example, fall back to reading save files from your home directory, but you wouldn’t know that if the devs don’t document that behavior- or there might be a config file somewhere you can edit to specify the location of savefiles, etc. If there’s a manual, then check it out. Is FCEUX the program you are using? I couldn’t find an official page for FCEUltra, and Wikipedia makes me think it’s been unsupported and undeveloped since 2004. I wouldn’t expect it to work very well anymore. FCEUX, on the other hand, has good online documentation – but it doesn’t explicitly support WRAM files, whatever those are.