Have you got audiovisual material in the form of cassettes or VHS tapes? Or something even more archaic, such as reel-to-reel tapes, you would like to archive in digital format? Have you got ...

All the connections are visually correct, and every tunnel tagged M_O is linked to a valid signal. The issue persists even after: Deleting and re-adding tunnels/splitters Reconnecting wires Restarting ...