[Crayder]

Make a loop through all possible actor ID's and see if they are valid with IsValidActor. If they are turning up to be valid then there is actors being created that you are not aware of. Now, see if 'actor1' is a valid actor with IsValidActor (do this in your creating command AND the destroying command). Post your results.

Just typical debugging. Always do typical debugging before posting here (no, your command was not enough).