If you do not use the EliMZ_Book, the rpg maker plugin manager will warn you about that, on the footer of the plugin manager window(where you install your plugins)
Your note tag seems right. Since you also tried with only EliMZ_Book and Item sounds ON, I guess I will need a sample project from you replicating the issue so I can take a look. Because I'm not being able to replicate the error on my side.
Just create a project, configure the plugin the way you are doing. And upload it somewhere and send me the link so i can download.