In the summer of 2012 during a heartbreaking time in my life, my good friend John Shaffer allowed me to plunk around on his piano while he was cooking dinner for his family. This proved to be a cathartic experience and although I am not a piano player (hence the title: User Error), I did purge some frustrations during the process. I'm flying by the seat of my pants. User error and system failure. I hope there is something here of some value despite the futility of the pursuit.