Hi Deathscyp,
Please do not bump threads that have not gone unanswered for at least 4 or more days from the most recent post. This clutters the answerhub and makes it more difficult to parse through information. We typically do not have staff available on weekends to assist on bugs and requests.
With the dead scene, have you tried adding a reset? I believe the error you may be seeing is that you kill the player, however you have not reset the do Once, so when you hit the volume again it cannot fire the functionality. Try this to see if it addresses your error.