~upd~: 463 Mk3 Ultimate.u64 Not Found

Search your SD card or hard drive for *.u64 and *.sav files. Look for any filename containing 463 or mk3 . Delete or relocate them. Nine times out of ten, the error will vanish.

If you think you have the right files but the error persists, use MAME's built-in audit tool. 463 mk3 ultimate.u64 not found

Possible causes: