I have a strange problem in my app store. It is displaying an update for a program I don't have installed on the computer. When I try to update it, it asks for a password. Problem is the apple id is not mine. I did buy it second hand so maybe it is left over but I can't get in touch. I have done a search and confirmed the program is not installed. I was thinking it has something to do with receipts or something like that. Does anyone know of a way to remove this.