Q: El Capitan and Itunes

Hi All

Since installing the newest Version of El Capitan I can run and open Itunes no problem, when I open a album track or move from any album or song that is currently playing it completely crashes my whole system

Computer shuts down and restarts to the Username and Password page, basically rendering my Itunes useless as i can no longer use it

Any suggestions on thisat all would be really appreciated!

Thank you