The tape needs "rewinding" to find the other character's data... I don't know which emulator you're using, but on Spectaculator there is a "stop at end of tape" option which needs disabling to allow the tape to loop indefinitely. So you'll need to find your emulators similar option or "rewind" button. Hope that info can help you, and if so please reply here with details so I can add the info for other players if you find it! Many thanks 🙂