) matches the ROM set version required by the experimental OpenEmu arcade core. If you see a "Missing Files" error, your ROM is likely a "split" set missing parent data or is from a version of MAME that is too new. 3. How to Verify and Run Follow these steps to ensure a "verified" playable state: Check the Core: OpenEmu > Settings > Cores . Ensure the core is installed and up to date. Importing:
) to be present in the same folder or imported alongside the game. Common Issues Audit Failed : If you see "Audit failed," check macOS Console.app openemu metal slug verified